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11. 发明授权

US11609027B2 Control method for vapor compression cycle 有权
公开(公告)号：US11609027B2
公开(公告)日：2023-03-21
申请号：US17111548
申请日：2020-12-04
申请人： Purdue Research Foundation
发明人： Riley B Barta , Eckhard Achim Groll , Davide Ziviani , Florian Simon
IPC分类号： F25B49/02 , F25B11/02 , F25B30/02 , F25B40/06
摘要： A method for operating and controlling a vapor-compression cycle includes providing a system comprising an evaporator with a fan, a compressor, a condenser with a fan, an integrated expander, and a flash tank device with a vapor/liquid two-phase inlet and two outlets wherein a first outlet is a vapor outlet and a second outlet is a liquid outlet, and a metering valve; bringing a vapor-compression cycle up to steady-state at a fixed operating condition; opening the metering valve until the desired compressor suction superheat is achieved; and maintaining the desired degree of superheat by selectively increasing and decreasing superheat by reducing and increasing metering valve flow rate respectively.

12. 发明授权

US11599994B2 System and methods for clear optimally matched panoramic channel technique for deep brain photonic interface 有权
公开(公告)号：US11599994B2
公开(公告)日：2023-03-07
申请号：US16833550
申请日：2020-03-28
申请人： Purdue Research Foundation
发明人： Meng Cui
IPC分类号： G06T7/00 , G02B5/04 , G02B13/00 , H01J43/28 , G02B3/00
摘要： An optical tissue imaging system includes a probe for insertion into a transparent cylindrical capillary. The capillary includes an internal cylindrical channel that extends along a central axis. The capillary is inserted into tissue of a subject, and the probe may rotate and translate within the capillary. The probe may include a mirror configured to reflect light to the tissue outside of the cylindrical capillary.

13. 发明申请

US20230038709A1 System and Method for Authoring Freehand Interactive Augmented Reality Applications 有权
公开(公告)号：US20230038709A1
公开(公告)日：2023-02-09
申请号：US17814965
申请日：2022-07-26
申请人： Purdue Research Foundation
发明人： Karthik Ramani , Tianyi Wang , Xun Qian , Fengming He
IPC分类号： G06F3/01 , G06T19/00 , G06T13/20
摘要： An augmented reality (AR) application authoring system is disclosed. The AR application authoring system enables the real-time creation of freehand interactive AR applications with freehand inputs. The AR application authoring system enables intuitive authoring of customized freehand gesture inputs through embodied demonstration while using the surrounding environment as a contextual reference. A visual programming interface is provided with which users can define freehand interactions by matching the freehand gestures with reactions of virtual AR assets. Thus, users can create personalized freehand interactions through simple trigger-action programming logic. Further, with the support of a real-time hand gesture detection algorithm, users can seamlessly test and iterate on the authored AR experience.

14. 发明申请

US20230030682A1 HIGH ACCURACY NON-INVASIVE CURRENT SENSOR SYSTEM 有权
公开(公告)号：US20230030682A1
公开(公告)日：2023-02-02
申请号：US17779480
申请日：2020-11-24
申请人： Purdue Research Foundation
发明人： Kaushik Roy , Byunghoo Jung , Chamika Mihiranga Liyanagedera
IPC分类号： G01R15/20 , G01R25/00 , G01R19/14
摘要： System and methods for high accuracy, non-intrusive current sensing are provided. A system may include two magnetic field sensors configured for differential sensing. The system may further include frontend circuitry configured to remove direct current (DC) offset of the magnetic field sensors, upconvert the outputs of the magnetic field sensors, and filter out at least one frequency component from the up-converted signals. The system may receive output signals from the front-end circuitry corresponding to each sensor. The system may further calculate a differential signal based on the output signals. The system may apply optimal detection based on the differential signal and a reference signal to calculate a measurement of current flow. The system may determine a phase angle measurement between the differential signal and the reference signal to calculate a direction of the current flow in the conductor and output various measurement information related to the detected current.

15. 发明授权

US11566900B2 MEMS rotation rate sensor 有权
公开(公告)号：US11566900B2
公开(公告)日：2023-01-31
申请号：US16810650
申请日：2020-03-05
申请人： Purdue Research Foundation
发明人： Sunil Bhave
IPC分类号： G01C19/5776 , G01C19/5677 , G01C19/56
摘要： A sensor for measuring rate of rotation is disclosed which includes a disk resonator, an anchor coupled to the disk resonator and further coupled to a substrate, and an optical waveguide wrapping around at least a portion of the perimeter of the disk resonator, the optical waveguide having an input end and an output end, wherein the disk resonator is configured to expand radially when subject to a rotational input, and wherein said radial expansion is adapted to cause a change in an optical signal passing through the optical waveguide.

16. 发明授权

US11566046B2 CBX8 chromdomain inhibitors and the uses thereof 有权
公开(公告)号：US11566046B2
公开(公告)日：2023-01-31
申请号：US16894036
申请日：2020-06-05
申请人： Purdue Research Foundation
发明人： Casey J. Krusemark , Emily C. Dykhuizen , Sijie Wang
IPC分类号： C07K5/10 , C07K7/06 , A61P35/02 , C07K5/107 , A61K38/00
摘要： The present invention relates to series of peptidomimetic compounds selectively targeting CBX8 of polycomb chromobox protein homolog proteins. Pharmaceutical compositions of those compounds and methods of using them in the treatment of diseases involved CBX8 pharmacology, including various cancers and leukemia, by administering therapeutically effective amounts of such compound alone or together with other therapeutics, are within the scope of this disclosure.

17. 发明授权

US11554515B2 Methods and compositions for preparing particle boards 有权
公开(公告)号：US11554515B2
公开(公告)日：2023-01-17
申请号：US17066544
申请日：2020-10-09
申请人： Purdue Research Foundation
发明人： Rusi P Taleyarkhan , Brian C Archambault , Alexander Charles Bakken
IPC分类号： C08G63/06 , B27N3/00 , C08G63/91 , C08G63/88 , C08J3/12 , B27N3/02 , B27N3/20
摘要： An amorphous polylactic acid polymer having a weight average molecular weight in the range of about 35,000 to 180,000 is described. The polylactic acid polymer composition can be hammer milled without cryogenics result in the form of particles wherein 90% of the particles have particle size of about 250 μm or less and the material has a glass transition temperature of between about 55° C. to about 58° C. and a relative viscosity of about 1.45 to about 1.95 centipoise. The polymer composition can be used to form an aqueous suspension. The material is ideally suited for use in preparing particleboard. A method is disclosed for preparing such polylactic acid polymers. The method involves obtaining an amorphous polylactic acid polymer having a weight average molecular weight of between about 115,000 to about 180,000. Treating the polylactic acid polymer to reduce the molecular weight to between about 35,000 to 45,000 such that it has a glass transition temperature of between about 55° C. and 58° C. and a relative viscosity of about 1.45 to about 1.95. Material can be formed into particles in a commercial hammer mill with bypass such that 90% of the initial mass results in the particles which can pass thru a sieve having a pore size of about 250 μm. During particle board formation the temperature of around 140-140 C being reached to optimally activate the adhesive; Bond strengths and throughput rates of resulting particle boards can be controlled thereafter, with variable combination of particle sizes, adhesive loading and initial moisture content.

18. 发明授权

US11551328B2 Graphics energy profiling system and method 有权
公开(公告)号：US11551328B2
公开(公告)日：2023-01-10
申请号：US17534306
申请日：2021-11-23
申请人： Purdue Research Foundation
发明人： Yu Charlie Hu , Ning Ding
IPC分类号： G06T1/20 , G06F9/451 , G06F11/30 , G06F1/28
摘要： A method for profiling energy usage in graphics user interfaces (UI) in handheld mobile devices is disclosed, which includes quantifying the central processing unit (CPU) energy drain of each UI update, quantifying the graphics processing unit (GPU) energy drain of each UI update, quantifying the number of pixels changed due to each UI update, identifying an UI update that consumes energy drain but results in no pixel changes to the displayed frame as a graphics energy bug.

19. 发明申请

US20230005309A1 LOCKING DEVICES, SYSTEMS, AND METHODS OF USE 有权
公开(公告)号：US20230005309A1
公开(公告)日：2023-01-05
申请号：US17930777
申请日：2022-09-09
申请人： Purdue Research Foundation
发明人： Justin Douglas Tarman , Matthew W. Barrett , Nicholas Aaron Catanzarite , Jesse A. Ham , Dominic A. Layne
IPC分类号： G07C9/00 , G06Q50/30
摘要： Locking devices, systems, and methods for securing personal property to separate structures. Such a locking device includes a lock body, a cable within the lock body and having a first end accessible from an exterior of the lock body, a spool for extending and retracting the cable out of and into the lock body, a lock pin disposed at the first end of the cable, a cable lock incorporated into the lock body and configured to releasably secure the lock pin to the lock body, and an electronic communication and control unit incorporated into the lock body and configured to communicate with a remote device. The electronic communication and control unit controls the cable lock to secure and release the lock pin relative to the lock body to allow the remote device to wirelessly unlock the first end of the cable from the lock body.

20. 发明申请

US20230001084A1 DRUG DELIVERY DEVICE AND METHOD 有权
公开(公告)号：US20230001084A1
公开(公告)日：2023-01-05
申请号：US17931162
申请日：2022-09-12
申请人： Purdue Research Foundation
发明人： Hyowon Lee , Bahar Dhowan
IPC分类号： A61M5/142 , A61M31/00 , A61B5/00 , A61M5/44 , A61K9/00 , A61M37/00
摘要： An implantable drug delivery device and method for delivering a drug to a living body. The device includes a housing having at least one opening, a reservoir within the housing adapted to contain a drug, a temporary seal closing the opening of the housing, and a heating element in thermal contact with the temporary seal. The heating element is adapted to generate heat in response to a magnetic field to melt the temporary seal and release a drug within the reservoir through the opening of the housing.

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