Patents by Inventor Yanmei Li
Yanmei Li 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: 20120118559Abstract: A sealing element for a rotating control device is disclosed, wherein the sealing element has an inner surface which forms a drillstring bore extending axially through the sealing element, an attachment end having a receiving cavity extending into the attachment end substantially parallel with the drillstring bore, a nose end opposite from the attachment end, wherein the nose end has an inner diameter smaller than the inner diameter of the attachment end, a throat region between the attachment end and the nose end, at least one soft elastomer region comprising a soft elastomer material having a hardness of 70 duro or less, and at least one stiff elastomer region comprising a stiff elastomer material having a hardness greater than 70 duro.Type: ApplicationFiled: March 24, 2011Publication date: May 17, 2012Applicant: SMITH INTERNATIONAL, INC.Inventors: Yanmei Li, Alan W. Lockstedt, Sudarsanam Chellappa
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Publication number: 20110274716Abstract: A composition comprises extract of fucoxanthin, wherein said composition further comprises tocotrienols and/or fucoidan. Said composition can be used to treat obesity. Said composition shows outstanding effect of weight loss. There is outstanding synergy effect among those constituents of the composition.Type: ApplicationFiled: January 19, 2009Publication date: November 10, 2011Applicant: Beijing Gingko Group Biological Technology Co., Ltd.Inventors: Yanmei Li, Qinghua Liu
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Patent number: 7939111Abstract: A first extract of lingonberry (Vaccinium vitis-idaea L.) comprising 5-35 wt % of anthocyanin, 20-95 wt % of proanthocyanin, less than 5 wt % of resveratrol, and the balance of other components, a second extract containing 60-98 wt % of resveratrol, and a third extract composed any ratio of comprising of the first and the second extracts. Methods for preparing the first and second extracts, and use of the extracts in preparation of compositions for eliminating oxygen free radicals, anti-aging, weight loss, preventing cardiovascular disease, inhibiting thrombosis, and promoting beauty.Type: GrantFiled: November 13, 2007Date of Patent: May 10, 2011Assignee: Beijing Gingko-Group Biological Technology Co., Ltd.Inventors: Qiaojie Cheng, Yanmei Li, Xiarui Dou
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Publication number: 20110038985Abstract: Methods for preparing black soybean hull extracts and uses thereof. The methods can comprise: (1) extracting crushed black soybean hull with aqueous solution containing enzyme and filtering the extracted liquid; (2) ultrafiltration of the extract liquid with an ultrafiltration membrane; (3) absorbing the ultrafiltration liquid with an absorption resin or an ion exchange resin, and elution with ethanol to obtain purified extract liquid; (4) concentrating the purified extract liquid under vacuum; (5) spray drying the concentrated liquid. The extract can contain: 10-45% of cyanidin, 10-25% of catechin, and 40-80% of OPC, and with a total polyphenol content as high as 70-100%. The extract can be used for preparing drugs or food containing antioxidants, or used for improving metabolic syndrome or eyesight.Type: ApplicationFiled: October 20, 2010Publication date: February 17, 2011Applicant: Beijing Gingko-Group Biological Technology Co., Ltd.Inventors: Yanmei Li, Fengying Zhou, Xiarui Dou
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Publication number: 20100297272Abstract: The invention relates to a cosmetic composition containing lingonberry extract and its use on skin cosmetology thereof. The present invention has provided a lingonberry extract wherein containing polyphenols components including anthocyanidin, procyanidin, resveratrol, catechin and so on. The present invention also relates to the application of lingonberry extract on skin cosmetology, including without limitation whitening, diminishing visible pigmentation, anti-wrinkle, moisturizing, smoothing and improving skin sensitivity. The invention also has revealed drugs, cosmetic composition and food prepared by using lingonberry extract. Comparing with the prior art cosmetic compositions, the said lingonberry extract of the present invention has higher effects and safe.Type: ApplicationFiled: April 10, 2008Publication date: November 25, 2010Applicant: Beijing Gingko Group Biological Technology Co., Ltd.Inventors: Chunhua Li, Yanmei Li
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Publication number: 20100152286Abstract: The present invention provides a method for producing fucoxanthin extract, said method comprising: performing absorption of the fucoxanthin extract by using absorbent and then performing elution to remove heavy metals and arsenic salt contained in the fucoxanthin extract, wherein the absorbent is selected from a group having macroporous resin, polyamide, activated carbon, alumina and a combination thereof. The method for producing fucoxanthin extract according to the present invention, the content of heave metal in the fucoxanthin extract can be reduced, while the content of fucoxanthin in the fucoxanthin extract can increase. In addition, the present invention also provides a fucoxanthin extract obtained by the above method, as well as fucoxanthin products containing the fucoxanthin extract.Type: ApplicationFiled: November 16, 2009Publication date: June 17, 2010Applicant: Beijing Gingko Group Biological Technology Co., Ltd.Inventors: Yanmei Li, Liang Li
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Patent number: 7510019Abstract: A seal assembly that is usable with a well includes a metal body that is adapted to expand radially inwardly and radially outwardly in response to the body being longitudinally compressed between compressing surfaces. The metal body includes first and second surfaces that do not conform to the compressing surfaces before longitudinal compression of the body and are adapted to contact the compressing surfaces.Type: GrantFiled: April 11, 2007Date of Patent: March 31, 2009Assignee: Schlumberger Technology CorporationInventors: Yanmei Li, Daniel M. Torbett, Andrew T. Werner, James D. Hendrickson, Nathan Kathol, Vi Nguy
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Publication number: 20090011056Abstract: A first extract of lingonberry (Vaccinium vitis-idaea L.) comprising 5-35 wt % of anthocyanin, 20-95 wt % of proanthocyanin, less than 5 wt % of resveratrol, and the balance of other components, a second extract containing 60-98 wt % of resveratrol, and a third extract composed any ratio of comprising of the first and the second extracts. Methods for preparing the first and second extracts, and use of the extracts in preparation of compositions for eliminating oxygen free radicals, anti-aging, weight loss, preventing cardiovascular disease, inhibiting thrombosis, and promoting beauty.Type: ApplicationFiled: November 13, 2007Publication date: January 8, 2009Inventors: Qiaojie Cheng, Yanmei Li, Xiarui Dou
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Patent number: 7455106Abstract: An oilfield element or assembly having a polymeric substrate protected by a polymeric coating adhered to at least a portion of the polymeric substrate. The coating includes a polymer having the formula —[R(R1x)(R2y)]—, wherein: R is selected from C—C, aryl, or —C(R3p)(R4q)-aryl-C(R5r)(R6s)—; R1 and R2 may be the same or different; R3, R4, R5, and R6 are independently selected from halogen atoms and hydrogen atoms; and n is an integer ranging from 10 to 10,000.Type: GrantFiled: September 7, 2005Date of Patent: November 25, 2008Assignee: Schlumberger Technology CorporationInventors: Anthony F. Veneruso, Yanmei Li
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Publication number: 20080264647Abstract: A technique utilizes shape memory materials in wellbore applications. Well components are formed with shape memory materials able to transition to a desired state when activated. The well components are moved downhole with the shape memory material in one state. Upon introduction of an activating agent, the automatic transition of the shape memory material is initiated and the well component is changed to a state in which it is able to perform a desired downhole function.Type: ApplicationFiled: October 9, 2007Publication date: October 30, 2008Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventor: Yanmei Li
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Publication number: 20080145482Abstract: Methods for preparing black soybean hull extracts and uses thereof. The methods can comprise: (1) extracting crushed black soybean hull with aqueous solution containing enzyme and filtering the extracted liquid; (2) ultrafiltration of the extract liquid with an ultrafiltration membrane; (3) absorbing the ultrafiltration liquid with an absorption resin or an ion exchange resin, and elution with ethanol to obtain purified extract liquid; (4) concentrating the purified extract liquid under vacuum; (5) spray drying the concentrated liquid. The extract can contain: 10-45% of cyanidin, 10-25% of catechin, and 40-80% of OPC, and with a total polyphenol content as high as 70-100%. The extract can be used for preparing drugs or food containing antioxidants, or used for improving metabolic syndrome or eyesight.Type: ApplicationFiled: July 30, 2007Publication date: June 19, 2008Inventors: Yanmei Li, Fengying Zhou, Xiarui Dou
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Publication number: 20080061510Abstract: A seal assembly that is usable with a well includes a metal body that is adapted to expand radially inwardly and radially outwardly in response to the body being longitudinally compressed between compressing surfaces. The metal body includes first and second surfaces that do not conform to the compressing surfaces before longitudinal compression of the body and are adapted to contact the compressing surfaces.Type: ApplicationFiled: April 11, 2007Publication date: March 13, 2008Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Yanmei Li, Daniel M. Torbett, Andrew T. Werner, James D. Hendrickson, Nathan Kathol, Vi Nguy
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Patent number: 7304098Abstract: The present invention is a composition for forming seals. The composition includes a base material and a hydrogel. The base materials is preferably an elastomer or a thermoplastic. Seals formed with the composition are particularly suited for use in a wellbore environment. The inclusion of hydrogel in the seals allows the seals to be manipulated or altered through certain environmental factors. For instance, temperature, oil/water ratio, pH and the electronic field may all be used to alter the characteristics of the hydrogel. In this way, the seal may be caused to swell in response to a specific stimulus, thereby preventing or sealing a leak without requiring additional work or input from the operator.Type: GrantFiled: July 28, 2006Date of Patent: December 4, 2007Assignee: Schlumberger Technology CorporationInventors: Yanmei Li, Jian Zhou
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Publication number: 20070051510Abstract: Oilfield elements and assemblies are described comprising a polymeric substrate and a polymer coating adhered to at least a portion of the substrate. Methods of using the elements and assemblies in oilfield operations are also described. This abstract allows a searcher or other reader to quickly ascertain the subject matter of the disclosure. It will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).Type: ApplicationFiled: September 7, 2005Publication date: March 8, 2007Inventors: Anthony Veneruso, Yanmei Li
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Publication number: 20070044977Abstract: A packer that is usable with a well includes a resilient seal element and a support member. The resilient seal element is adapted to radially expand in response to the longitudinal compression of the element. The support member is at least partially surrounded by the seal element and is adapted to radially expand with the seal element to support the element. The support sleeve is substantially harder than the seal element.Type: ApplicationFiled: June 7, 2006Publication date: March 1, 2007Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: James Hendrickson, Karen Grosser, Yanmei Li
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Publication number: 20060278391Abstract: The present invention is a composition for forming seals. The composition includes a base material and a hydrogel. The base materials is preferably an elastomer or a thermoplastic. Seals formed with the composition are particularly suited for use in a wellbore environment. The inclusion of hydrogel in the seals allows the seals to be manipulated or altered through certain environmental factors. For instance, temperature, oil/water ratio, pH and the electronic field may all be used to alter the characteristics of the hydrogel. In this way, the seal may be caused to swell in response to a specific stimulus, thereby preventing or sealing a leak without requiring additional work or input from the operator.Type: ApplicationFiled: July 28, 2006Publication date: December 14, 2006Inventors: Yanmei Li, Jian Zhou
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Publication number: 20060047028Abstract: The present invention is a composition for forming seals. The composition includes a base material and a hydrogel. The base material is preferably an elastomer or a thermoplastic. Seals formed with the composition are particularly suited for use in a wellbore environment. The inclusion of hydrogel in the seals allows the seals to be manipulated or altered through certain environmental factors. For instance, temperature, oil/water ratio, pH and the electronic field may all be used to alter the characteristics of the hydrogel. In this way, the seal may be caused to swell in response to a specific stimulus, thereby preventing or sealing a leak without requiring additional work or input from the operator.Type: ApplicationFiled: October 7, 2005Publication date: March 2, 2006Inventors: Yanmei Li, Jian Zhou
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Publication number: 20050171248Abstract: The present invention is a composition for forming seals. The composition includes a base material and a hydrogel. The base materials is preferably an elastomer or a thermoplastic. Seals formed with the composition are particularly suited for use in a wellbore environment. The inclusion of hydrogel in the seals allows the seals to be manipulated or altered through certain environmental factors. For instance, temperature, oil/water ratio, pH and the electronic field may all be used to alter the characteristics of the hydrogel. In this way, the seal may be caused to swell in response to a specific stimulus, thereby preventing or sealing a leak without requiring additional work or input from the operator.Type: ApplicationFiled: February 27, 2004Publication date: August 4, 2005Inventors: Yanmei Li, Jian Zhou
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Publication number: 20050161212Abstract: A system and method is provided for improving the life and/or function of downhole tools that operate in adverse subterranean environments. Polymeric components, such as seals, are formed with nano-scale filler material. The nano-scale filler material is dispersed in the polymeric material to substantially improve desired material properties.Type: ApplicationFiled: January 20, 2005Publication date: July 28, 2005Applicant: SCHLUMBERGER TECHNOLOGY CORPORATIONInventors: Dwayne Leismer, Yanmei Li