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1. 发明公开

US20240286912A1 METHOD FOR PRODUCING LITHIUM SULFATE AND TRANSITION METAL SULFATE 审中-公开
公开(公告)号：US20240286912A1
公开(公告)日：2024-08-29
申请号：US18578865
申请日：2022-07-07
申请人： TODA KOGYO CORP.
发明人： Tomohiro HONDA , Anyu ZHANG , Masayuki YOKOTA , Nobuyuki TAGAMI
IPC分类号： C01D15/06 , C22B3/44 , H01M10/54
CPC分类号： C01D15/06 , C22B3/44 , H01M10/54
摘要： The present invention is to provide a means for efficiently and economically separating and recovering transition metals including nickel and cobalt, and lithium from an aqueous sulfate solution comprising the transition metal and lithium as major components.
The present invention is a process for producing lithium sulfate comprising:

a step of concentration-crystallization to an aqueous solution comprising at least lithium sulfate and a transition metal sulfate as main components so as to obtain a slurry comprising lithium sulfate as a solid content, and
a step of solid-liquid separation of the slurry obtained in the step of concentration-crystallization so as to separate lithium crystals and a crystallization mother liquor.

2. 发明公开

US20240240330A1 PROCESS FOR PRODUCING LITHIUM HYDROXIDE 审中-公开
公开(公告)号：US20240240330A1
公开(公告)日：2024-07-18
申请号：US18562214
申请日：2023-01-05
申请人： TODA KOGYO CORP.
发明人： Tomohiro HONDA , Anyu ZHANG , Masayuki YOKOTA , Nobuyuki TAGAMI
IPC分类号： C25B1/16 , B01D9/02 , C25B1/22
CPC分类号： C25B1/16 , B01D9/02 , C25B1/22
摘要： The present invention provides an efficient producing method of high-purity lithium hydroxide, capable of increasing the yield of lithium hydroxide, removing alkali metal impurities, and reducing the amount of by-products generated.
A process for producing lithium hydroxide from lithium sulfate as a starting material containing at least one of sodium and potassium as impurities, which process comprises the following steps of (A) to (F):

(A) a production step of an aqueous lithium hydroxide solution and sulfuric acid by an electrochemical membrane separation method using lithium sulfate as a raw material;
(B) a crystallization step producing a lithium hydroxide crystal by crystallization using the obtained aqueous lithium hydroxide solution in the above electrochemical membrane separation step as a raw material;
(C) a solid-liquid separation step in which a portion of slurry in the above crystallization step is discharged and is subjected to solid-liquid separation to separate a lithium hydroxide crystal and crystallization mother liquor, and thereafter a washing step to clean the separated solid content;
(D) a carbonation step obtaining a slurry comprising a lithium-containing carbonate compound as a solid content by discharging a portion of crystallization mother liquor in said crystallization step and reacting said discharged crystallization mother liquor with carbon dioxide gas, and a solid-liquid separation step separating said slurry into a lithium-containing solid content and a liquid content;
(E) an acid dissolution step producing a lithium sulfate aqueous solution by reacting said lithium-containing solid content with sulfuric acid;
(F) a mixing step reusing the lithium sulfate aqueous solution obtained by said acid dissolution step as the raw material of said step of (A).

3. 发明公开

US20240055167A1 FERRITE SHEET STRIP, AND ANTENNA DEVICE AND CABLE USING FERRITE SHEET STRIP 审中-公开
公开(公告)号：US20240055167A1
公开(公告)日：2024-02-15
申请号：US18259580
申请日：2021-10-20
申请人： TODA KOGYO CORP.
发明人： Satoshi OHMAE , Tetsuya KIMURA , Makoto SADAI , Yoji OKANO
IPC分类号： H01F1/34 , H01Q7/00
CPC分类号： H01F1/34 , H01Q7/00
摘要： A ferrite sheet strip includes a strip shaped substrate and a plurality of ferrite sheet pieces provided on a surface of the substrate. The plurality of ferrite sheet pieces are aligned and spaced apart by a gap from one another along a longitudinal direction of the substrate. The gap extends at least partially so as not to be parallel to a lateral direction of the substrate.

4. 发明公开

US20240033979A1 FERRITE PARTICLES FOR BONDED MAGNETS, RESIN COMPOSITION FOR BONDED MAGNETS, AND MOLDED PRODUCT USING THE SAME 审中-公开
公开(公告)号：US20240033979A1
公开(公告)日：2024-02-01
申请号：US18379809
申请日：2023-10-13
申请人： TODA KOGYO CORP.
发明人： Yasushi NISHIO , Yasuhiko FUJII , Hiromitsu SAKURAI
IPC分类号： B29C45/00 , C01G49/00 , H01F1/11
CPC分类号： B29C45/0001 , C01G49/0036 , H01F1/11 , C01P2006/42 , C01P2006/12 , B29K2505/12
摘要： The present invention relates to ferrite particles for bonded magnets and a resin composition for bonded magnets which can provide a bonded magnet molded product capable of realizing a high magnetic force and a complicated multipolar waveform owing to such a feature that the ferrite particles are readily and highly oriented against an external magnetic field in a flowing resin upon injection molding, as well as a bonded magnet molded product obtained by injection-molding the above composition. According to the present invention, there are provided ferrite particles for bonded magnets which have a crystallite size of not less than 500 nm as measured in an oriented state by XRD, and an average particle diameter of not less than 1.30 μm as measured by Fisher method; a resin composition for bonded magnets; and a molded product obtained by injection-molding the composition.

5. 发明申请

US20230029005A1 SODIUM FERRITE PARTICLE POWDER AND PRODUCTION METHOD THEREOF 有权
公开(公告)号：US20230029005A1
公开(公告)日：2023-01-26
申请号：US17783860
申请日：2020-12-04
申请人： TODA KOGYO CORP.
发明人： Muneyoshi SAKAMOTO , Nobuya Shimo , Eiichi KURITA
IPC分类号： C01G49/00 , B01J20/06
摘要： The sodium ferrite particle powder according to the present invention is characterized in that at least one metal or more selected from the metal group consisting of silicon, aluminum, titanium, manganese, cobalt, nickel, magnesium, copper and zinc is contained in an amount of 0.05 to 20% by weight in terms of the oxide, and the molar ratio of Na/Fe is 0.75 to 1.25.

6. 发明申请

US20230006352A1 MODULE SUBSTRATE ANTENNA AND MODULE SUBSTRATE USING SAME 有权
公开(公告)号：US20230006352A1
公开(公告)日：2023-01-05
申请号：US17756369
申请日：2020-12-01
申请人： TODA KOGYO CORP.
发明人： Jun KOUJIMA
IPC分类号： H01Q7/00 , H05K1/02
摘要： A module substrate antenna (1) includes a first coil (7) and a second coil (8) that are connected in parallel. The first coil (7) is composed of a pattern in which a spiral first antenna coil pattern (3a) and a spiral second antenna coil pattern (5a) are interlayer-connected in series. The second coil (8) is composed of a pattern in which a spiral third antenna coil pattern (4a) and a spiral fourth antenna coil pattern (6a) are interlayer-connected in series. The coil patterns are arranged in order of the first antenna coil pattern (3a), the third antenna coil pattern (4a), the second antenna coil pattern (5a), and the fourth antenna coil pattern (6a).

7. 发明申请

US20210375513A1 R-T-B-BASED RARE EARTH MAGNET PARTICLES, PROCESS FOR PRODUCING THE R-T-B-BASED RARE EARTH MAGNET PARTICLES, AND BONDED MAGNET 有权
公开(公告)号：US20210375513A1
公开(公告)日：2021-12-02
申请号：US17399333
申请日：2021-08-11
申请人： TODA KOGYO CORP.
发明人： Nobuhiro KATAYAMA , Hirofumi KAWASAKI , Koichiro MORIMOTO
IPC分类号： H01F1/057 , C21D6/00 , B22F9/04 , C22C38/06 , C22C33/02 , C22C38/00 , C22C38/10 , C22C38/14
摘要： An object of the present invention is to enhance a coercive force of magnetic particles by promoting formation of a continuous R-rich grain boundary phase in a crystal grain boundary of a magnetic phase of the particles, and to thereby obtain R-T-B-based rare earth magnet particles further having a high residual magnetic flux density. The present invention relates to production of R-T-B-based rare earth magnet particles capable of exhibiting a high coercive force even when a content of Al therein is reduced, and a high residual magnetic flux density, in which formation of an R-rich grain boundary phase therein can be promoted by heat-treating Al-containing R-T-B-based rare earth magnet particles obtained by HDDR treatment in vacuum or in an Ar atmosphere at a temperature of not lower than 670° C. and not higher than 820° C. for a period of not less than 30 min and not more than 300 min.

8. 外观设计

USD894773S1 Wireless IC tag 有权
公开(公告)号：USD894773S1
公开(公告)日：2020-09-01
申请号：US29707340
申请日：2019-09-27
申请人： TODA KOGYO CORP. , SECURITAG ASSEMBLY GROUP CO., LTD.
设计人： Jun Koujima , Mark Chang , Yoshiteru Kouno , Peter Yan
摘要： FIG. 1 is a front elevational view of a first embodiment of a wireless IC tag according to our new design. A rear elevational view thereof is a mirror-image of the front elevational view.
FIG. 2 is a right side elevational view thereof.
FIG. 3 is a left side elevational view thereof.
FIG. 4 is a top plan view thereof.
FIG. 5 is a bottom plan view thereof.
FIG. 6 is a perspective view thereof.
FIG. 7 is a front elevational view of a second embodiment of a wireless IC tag according to our new design. A rear elevational view thereof is a mirror-image of the front elevational view.
FIG. 8 is a right side elevational view thereof.
FIG. 9 is a left side elevational view thereof.
FIG. 10 is a top plan view thereof.
FIG. 11 is a bottom plan view thereof; and,
FIG. 12 is a perspective view thereof.

9. 发明申请

US20200212442A1 LITHIUM NICKELATE-BASED POSITIVE ELECTRODE ACTIVE SUBSTANCE PARTICLES AND PROCESS FOR PRODUCING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY 审中-公开
公开(公告)号：US20200212442A1
公开(公告)日：2020-07-02
申请号：US16805990
申请日：2020-03-02
申请人： TODA KOGYO CORP.
发明人： Hiroyasu WATANABE , Xiang SUN
IPC分类号： H01M4/525 , C23C16/455 , C23C16/40 , C23C16/56 , H01M4/36 , H01M4/48 , H01M10/0525
摘要： The present invention provides lithium nickelate-based positive electrode active substance particles having a high energy density which are excellent in charge/discharge cycle characteristics when highly charged, and hardly suffer from generation of gases upon storage under high-temperature conditions, and a process for producing the positive electrode active substance particles, as well as a non-aqueous electrolyte secondary battery. The present invention relates to positive electrode active substance particles each comprising a core particle X comprising a lithium nickelate composite oxide having a layer structure which is represented by the formula: Li1+aNi1−b−cCobMcO2 wherein M is at least one element selected from the group consisting of Mn, Al, B, Mg, Ti, Sn, Zn and Zr; a is a number of −0.1 to 0.2 (−0.1⋅a⋅0.2); b is a number of 0.05 to 0.5 (0.05⋅b⋅0.5); and c is a number of 0.01 to 0.4 (0.01⋅c⋅0.4); a coating compound Y comprising at least one element selected from the group consisting of Al, Mg, Zr, Ti and Si; and a coating compound Z comprising an Li element, in which a content of lithium hydroxide LiOH in the positive electrode active substance particles is not more than 0.40% by weight, a content of lithium carbonate Li2CO3 in the positive electrode active substance particles is not more than 0.65% by weight, and a weight ratio of the content of lithium carbonate to the content of lithium hydroxide is not less than 1.

10. 发明授权

US10615414B2 Lithium nickelate-based positive electrode active substance particles and process for producing the same, and non-aqueous electrolyte secondary battery 有权
公开(公告)号：US10615414B2
公开(公告)日：2020-04-07
申请号：US15386406
申请日：2016-12-21
申请人： TODA KOGYO CORP.
发明人： Hiroyasu Watanabe , Xiang Sun
IPC分类号： H01M4/36 , H01M4/525 , C23C16/455 , C23C16/40 , C23C16/56 , H01M4/48 , H01M10/0525 , H01M10/052 , H01M4/02
CPC分类号： H01M4/525 , C23C16/403 , C23C16/45527 , C23C16/45531 , C23C16/45553 , C23C16/45555 , C23C16/56 , H01M4/366 , H01M4/483 , H01M10/0525 , H01M10/052 , H01M2004/021 , H01M2004/028 , H01M2220/30
摘要： The present invention provides lithium nickelate-based positive electrode active substance particles having a high energy density which are excellent in charge/discharge cycle characteristics when highly charged, and hardly suffer from generation of gases upon storage under high-temperature conditions, and a process for producing the positive electrode active substance particles, as well as a non-aqueous electrolyte secondary battery. The present invention relates to positive electrode active substance particles each comprising a core particle X comprising a lithium nickelate composite oxide having a layer structure which is represented by the formula: Li1+aNi1-b-cCobMcO2 wherein M is at least one element selected from the group consisting of Mn, Al, B, Mg, Ti, Sn, Zn and Zr; a is a number of −0.1 to 0.2 (−0.1≤a≤0.2); b is a number of 0.05 to 0.5 (0.05≤b≤0.5); and c is a number of 0.01 to 0.4 (0.01≤c≤0.4); a coating compound Y comprising at least one element selected from the group consisting of Al, Mg, Zr, Ti and Si; and a coating compound Z comprising an Li element, in which a content of lithium hydroxide LiOH in the positive electrode active substance particles is not more than 0.40% by weight, a content of lithium carbonate Li2CO3 in the positive electrode active substance particles is not more than 0.65% by weight, and a weight ratio of the content of lithium carbonate to the content of lithium hydroxide is not less than 1.

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