Patents by Inventor Xiaoguang WEN
Xiaoguang WEN has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240139110Abstract: A sleep-regulating tablet allowing release by stages and a preparation method thereof are provided. The tablet structurally consists of a drug-containing delayed-release tablet core, a drug-free stomach-soluble coating, a drug-free enteric coating, a drug-containing immediate-release shell, and a shell stomach-soluble coating sequentially from inside to outside. An ideal dual-stage timed drug release mode may be realized, and is especially suitable for a sleep-regulating drug, such as ramelteon.Type: ApplicationFiled: August 16, 2022Publication date: May 2, 2024Applicant: OVERSEAS PHARMACEUTICALS, LTD.Inventors: Xiaoguang WEN, Jingya WANG, Dachuan ZHAO, Jun FAN, Chenliang ZHANG, Peipei WANG
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Publication number: 20230210779Abstract: An ibuprofen controlled-release tablet and a method for preparing same are provided. The controlled-release tablet is composed of a drug-containing immediate-release layer and a drug-containing sustained-release layer, wherein a mass of ibuprofen in the drug-containing sustained-release layer is greater than a mass of ibuprofen in the drug-containing immediate-release layer, and a ratio of the mass of the ibuprofen in the drug-containing sustained-release layer to the mass of the ibuprofen in the drug-containing immediate-release layer is ?7. The tablet of the present disclosure has an effective analgesic effect for 24 h after administration.Type: ApplicationFiled: March 8, 2023Publication date: July 6, 2023Applicant: OVERSEAS PHARMACEUTICALS, LTD.Inventors: Xiaoguang WEN, Xiaofeng HUANG, Dachuan ZHAO, Jun FAN, Chenliang ZHANG, Peipei WANG, Min LI
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Patent number: 10940114Abstract: The invention discloses a double-layer tablet, wherein one layer has hole in which the ingredients of the other layer are filled; the number of said hole is 1-3, the diameters of the holes are 1-10 mm. Each layer of the double-layer tablet includes the active ingredients and the adjuvant materials and can be the rapid-release layer or sustained-release layer respectively. The preparation method: Preparing respectively a component I and a component II, both of them containing the active ingredients and the pharmaceutical excipients, and preparing the tablet having holes from component I; Forming the double-layer tablet composed of the component I layer and the component II layer after pressing said tablet having holes with the component II together; and filling the component II into the holes during compressing.Type: GrantFiled: November 1, 2018Date of Patent: March 9, 2021Assignee: OVERSEAS PHARMACEUTICALS (GUANGZHOU) LTD.Inventor: Xiaoguang Wen
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Patent number: 10925836Abstract: The invention discloses a double-layer tablet, wherein one layer has hole in which the ingredients of the other layer are filled; the number of said hole is 1-3, the diameters of the holes are 1-10 mm. Each layer of the double-layer tablet includes the active ingredients and the adjuvant materials and can be the rapid-release layer or sustained-release layer respectively. The preparation method: Preparing respectively a component I and a component II, both of them containing the active ingredients and the pharmaceutical excipients, and preparing the tablet having holes from component I; Forming the double-layer tablet composed of the component I layer and the component II layer after pressing said tablet having holes with the component II together; and filling the component II into the holes during compressing.Type: GrantFiled: November 1, 2018Date of Patent: February 23, 2021Assignee: OVERSEAS PHARMACEUTICALS (GUANGZHOU) LTD.Inventor: Xiaoguang Wen
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Patent number: 10413514Abstract: Disclosed is a controlled-release solid preparation, which consists of an internal core and a coating layer, wherein part of the surface of the internal core is not covered with the coating, and is exposed to the surface of the solid preparation. Since the medicament just releases at the exposed part, the aim of controlled release can be achieved by controlling this exposed surface area.Type: GrantFiled: April 8, 2015Date of Patent: September 17, 2019Assignee: OVERSEAS PHARMACEUTICALS, LTD.Inventor: Xiaoguang Wen
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Publication number: 20190133960Abstract: The invention discloses a double-layer tablet, wherein one layer has hole in which the ingredients of the other layer are filled; the number of said hole is 1-3, the diameters of the holes are 1-10 mm. Each layer of the double-layer tablet includes the active ingredients and the adjuvant materials and can be the rapid-release layer or sustained-release layer respectively. The preparation method: Preparing respectively a component I and a component II, both of them containing the active ingredients and the pharmaceutical excipients, and preparing the tablet having holes from component I; Forming the double-layer tablet composed of the component I layer and the component II layer after pressing said tablet having holes with the component II together; and filling the component II into the holes during compressing.Type: ApplicationFiled: November 1, 2018Publication date: May 9, 2019Applicant: Overseas Pharmaceuticals (Guangzhou), Ltd.Inventor: Xiaoguang WEN
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Publication number: 20190133959Abstract: The invention discloses a double-layer tablet, wherein one layer has hole in which the ingredients of the other layer are filled; the number of said hole is 1-3, the diameters of the holes are 1-10 mm. Each layer of the double-layer tablet includes the active ingredients and the adjuvant materials and can be the rapid-release layer or sustained-release layer respectively. The preparation method: Preparing respectively a component I and a component II, both of them containing the active ingredients and the pharmaceutical excipients, and preparing the tablet having holes from component I; Forming the double-layer tablet composed of the component I layer and the component II layer after pressing said tablet having holes with the component II together; and filling the component II into the holes during compressing.Type: ApplicationFiled: November 1, 2018Publication date: May 9, 2019Applicant: Overseas Pharmaceuticals (Guangzhou), Ltd.Inventor: Xiaoguang WEN
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Patent number: 10137092Abstract: The invention discloses a double-layer tablet, wherein one layer has hole in which the ingredients of the other layer are filled; the number of said hole is 1-3, the diameters of the holes are 1-10 mm. Each layer of the double-layer tablet includes the active ingredients and the adjuvant materials and can be the rapid-release layer or sustained-release layer respectively. The preparation method: Preparing respectively a component I and a component II, both of them containing the active ingredients and the pharmaceutical excipients, and preparing the tablet having holes from component I; Forming the double-layer tablet composed of the component I layer and the component II layer after pressing said tablet having holes with the component II together; and filling the component II into the holes during compressing.Type: GrantFiled: December 19, 2014Date of Patent: November 27, 2018Inventor: Xiaoguang Wen
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Publication number: 20170027872Abstract: Disclosed is a controlled-release solid preparation, which consists of an internal core and a coating layer, wherein part of the surface of the internal core is not covered with the coating, and is exposed to the surface of the solid preparation. Since the medicament just releases at the exposed part, the aim of controlled release can be achieved by controlling this exposed surface area.Type: ApplicationFiled: April 8, 2015Publication date: February 2, 2017Applicant: Overseas Pharmaceuticals, Ltd.Inventor: Xiaoguang WEN
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Publication number: 20160317449Abstract: The invention discloses a double-layer tablet, wherein one layer has hole in which the ingredients of the other layer are filled; the number of said hole is 1-3, the diameters of the holes are 1-10 mm. Each layer of the double-layer tablet includes the active ingredients and the adjuvant materials and can be the rapid-release layer or sustained-release layer respectively. The preparation method: Preparing respectively a component I and a component II, both of them containing the active ingredients and the pharmaceutical excipients, and preparing the tablet having holes from component I; Forming the double-layer tablet composed of the component I layer and the component II layer after pressing said tablet having holes with the component II together; and filling the component II into the holes during compressing.Type: ApplicationFiled: December 19, 2014Publication date: November 3, 2016Inventor: Xiaoguang WEN