Patents by Inventor Wei Leng
Wei Leng 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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Patent number: 11587596Abstract: A hard disk drive includes a base deck and a cover. The cover is coupled to the base deck to create an enclosure. The hard disk drive also includes tape that covers at least a portion of the cover and the base deck. The tape includes an adhesive layer, which includes an adhesive material and a moisture-absorbent material.Type: GrantFiled: October 16, 2020Date of Patent: February 21, 2023Assignee: Seagate Technology LLCInventors: Chee Yin Chan, Wei Leng Tee, Than Zaw Myint
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Patent number: 11514950Abstract: A hard disk drive includes a base deck with a floor portion and a side wall portion. The floor portion extends between an upper surface and a bottom surface, and the side wall portion extends from the floor portion. A top cover is coupled to the base deck and includes a ceiling portion and a wall portion. The hard disk drive includes a weld that directly couples the wall portion of the top cover to the floor portion of the base deck.Type: GrantFiled: March 5, 2021Date of Patent: November 29, 2022Assignee: Seagate Technology LLCInventors: Wei Leng Tee, Chee Kwong Cheng, Samuel E. Severson, S Selvaruban
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Publication number: 20220284931Abstract: A hard disk drive includes a base deck with a floor portion and a side wall portion. The floor portion extends between an upper surface and a bottom surface, and the side wall portion extends from the floor portion. A top cover is coupled to the base deck and includes a ceiling portion and a wall portion. The hard disk drive includes a weld that directly couples the wall portion of the top cover to the floor portion of the base deck.Type: ApplicationFiled: March 5, 2021Publication date: September 8, 2022Inventors: Wei Leng Tee, Chee Kwong Cheng, Samuel E. Severson, S Selvaruban
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Publication number: 20220118400Abstract: A hard disk drive includes a base deck and a cover. The cover is coupled to the base deck to create an enclosure. The hard disk drive also includes tape that covers at least a portion of the cover and the base deck. The tape includes an adhesive layer, which includes an adhesive material and a moisture-absorbent material.Type: ApplicationFiled: October 16, 2020Publication date: April 21, 2022Inventors: Chee Yin Chan, Wei Leng Tee, Than Zaw Myint
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Patent number: 9890895Abstract: The present invention relates to a process for producing pipelines with heat-storing properties, in which a) organic polyisocyanate is mixed with b) at least one polymeric compound having at least two isocyanate-reactive hydrogen atoms, c) optionally chain extender and/or crosslinker, d) catalyst, e) wax and f) optionally other assistants and/or additives, to give a first reaction mixture, and the first reaction mixture is applied to a pipe and allowed to react fully to give a first polyurethane layer. The present invention further relates to a pipeline with heat-storing properties obtainable by such a process.Type: GrantFiled: September 25, 2013Date of Patent: February 13, 2018Assignee: BASF SEInventors: Daniel Freidank, Dejan Petrovic, Wei Leng, Julia Liese
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Publication number: 20140163745Abstract: A method for optimizing the configuration of a distributed CCHP system is disclosed.Type: ApplicationFiled: December 12, 2013Publication date: June 12, 2014Applicant: Guangdong Electric Power Design Institute of China Energy Engineering Group Co., Ltd.Inventors: Xuesong Ma, Bo Hu, Yongchun Fan, Zehan Chen, Xueping Peng, Bin Ge, Junli Zhang, Yongming Hua, Wei Leng, Jiamin Yin, Linwei Li, Zhanpeng Liang, Miaomiao Han, Jing Qi, Xiang Xu, Yuhua Chen, Chunrong Cai
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Publication number: 20140093668Abstract: The present invention relates to a process for producing pipelines with heat-storing properties, in which a) organic polyisocyanate is mixed with b) at least one polymeric compound having at least two isocyanate-reactive hydrogen atoms, c) optionally chain extender and/or crosslinker, d) catalyst, e) wax and f) optionally other assistants and/or additives, to give a first reaction mixture, and the first reaction mixture is applied to a pipe and allowed to react fully to give a first polyurethane layer. The present invention further relates to a pipeline with heat-storing properties obtainable by such a process.Type: ApplicationFiled: September 25, 2013Publication date: April 3, 2014Applicant: BASF SEInventors: Daniel FREIDANK, Dejan Petrovic, Wei Leng, Julia Liese
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Patent number: 8389740Abstract: Process for preparing salts of the formula I (B+)nxAy? where B is a cation comprising at least one nitrogen atom, A is an anion and n is an integer from 1 to 3, x and y are each an integer from 1 to 3 and the product of x and y is equal to n, by reacting salts of the formula II (B+)nxCy? where B and n, x and y are as defined above and C is a compound which has one or more carboxylate groups (referred to as carboxylate for short) and is different from A, with the ammonium salt of the anion A or with the protic acid of the anion A in the presence of ammonia.Type: GrantFiled: October 31, 2008Date of Patent: March 5, 2013Assignee: BASF SEInventors: Klemens Massonne, Michael Siemer, Werner Mormann, Wei Leng
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Patent number: 8382962Abstract: A method of distilling mixtures of salts having a melting point of less than 200° C. at 1 bar (ionic liquids). The cation of the ionic liquid has a heterocyclic ring system having at least one nitrogen atom, and all nitrogen atoms of the heterocyclic ring system have an organic group as substituent. The anion of the ionic liquid is a compound having at least one carboxylate group or at least one phosphate group. The distance from the surface via which the heat of distillation is introduced in the distillation (vaporizer surface) to the surface at which condensation takes place (condenser surface) is less than 50 cm at at least one point, with the vaporizer surface and condenser surface themselves having at least one length dimension of greater than 50 cm.Type: GrantFiled: August 15, 2008Date of Patent: February 26, 2013Assignee: BASF SEInventors: Klemens Massonne, Michael Siemer, Werner Mormann, Wei Leng
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Publication number: 20120116068Abstract: The present invention describes a process for the degradation of cellulose by dissolving the cellulose in an ionic liquid and treating it with an acid, if appropriate with addition of water.Type: ApplicationFiled: January 13, 2012Publication date: May 10, 2012Applicant: BASF SEInventors: Veit STEGMANN, Stephan Freyer, Klemens Massonne, Giovanni D'Andola, Werner Mormann, Markus Wezstein, Wei Leng
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Patent number: 8168073Abstract: A reclaimer, for the separation of heavier solids from slurry water, including an inlet means (50) to allow loading of a flow of the solid laden slurry water (90), a reclaiming tank (10) to contain the input from the inlet means (50), a plurality of lamella plates (20) to increase the effective separation surface area to improve the separation process, said lamella plates (20) provided at an angle, an agitation mechanism (40) for loosening up the slurry water from the heavier solids, an outlet means (82) to allow the separated slurry water to exit the tank (10), wherein the agitation mechanism (40) is a conveyor, with a plurality of protrusions (42).Type: GrantFiled: July 28, 2005Date of Patent: May 1, 2012Assignee: SP-ZI-COM Pte LtdInventors: Khee Yang Ng, Samuel Wong, Giau Leong Low, Wei Leng Ng, Giok Lak Sim
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Publication number: 20100300870Abstract: Method of distilling mixtures comprising salts having a melting point of less than 200° C. at 1 bar (ionic liquids), wherein the cation of the ionic liquid comprises a heterocyclic ring system having at least one nitrogen atom and all nitrogen atoms of the heterocyclic ring system have an organic group as substituent, the anion of the ionic liquid is a compound having at least one carboxylate group (carboxylate for short) or at least one phosphate group (phosphate for short) and the distance from the surface via which the heat of distillation is introduced in the distillation (vaporizer surface) to the surface at which condensation takes place (condenser surface) is less than 50 cm at least one point, with the vaporizer surface and condenser surface themselves having at least one length dimension of greater than 50 cm.Type: ApplicationFiled: August 15, 2008Publication date: December 2, 2010Applicant: BASF SEInventors: Klemens Massonne, Michael Siemer, Werner Mormann, Wei Leng
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Publication number: 20100217010Abstract: Process for preparing salts of the formula I (B+)nxAy? where B is a cation comprising at least one nitrogen atom, A is an anion and n is an integer from 1 to 3, x and y are each an integer from 1 to 3 and the product of x and y is equal to n, by reacting salts of the formula II (B+)nxAy? where B and n, x and y are as defined above and C is a compound which has one or more carboxylate groups (referred to as carboxylate for short) and is different from A, with the ammonium salt of the anion A or with the protic acid of the anion A in the presence of ammonia.Type: ApplicationFiled: October 31, 2008Publication date: August 26, 2010Applicant: BASF SEInventors: Klemens Massonne, Michael Siemer, Werner Mormann, Wei Leng
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Publication number: 20090326216Abstract: The present invention describes a process for acylating polysaccharides, oligosaccharides or disaccharides or derivatives thereof by dissolving these in an ionic liquid and reacting them with a ketene, and also novel acylated polysaccharides, oligosaccharides or disaccharides or derivatives thereof.Type: ApplicationFiled: June 4, 2007Publication date: December 31, 2009Applicant: Basf SeInventors: Veit Stegmann, Klemens Massonne, Giovanni D'andola, Werner Mormann, Markus Wezstein, Wei Leng
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Publication number: 20090314726Abstract: A reclaimer, for the separation of heavier solids from slurry water, including an inlet means (50) to allow loading of a flow of the solid laden slurry water (90), a reclaiming tank (10) to contain the input from the inlet means (50), a plurality of lamella plates (20) to increase the effective separation surface area to improve the separation process, said lamella plates (20) provided at an angle, an agitation mechanism (40) for loosening up the slurry water from the heavier solids, an outlet means (82) to allow the separated slurry water to exit the tank (10), wherein the agitation mechanism (40) is a conveyor, with a plurality of protrusions (42).Type: ApplicationFiled: July 28, 2005Publication date: December 24, 2009Applicant: SP-ZICOM PTE LTDInventors: Khee Yang Ng, Samuel Wong, Giau Leong Low, Wei Leng Ng, Giok Lak Sim
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Publication number: 20090281303Abstract: The present invention describes a process for silylating polysaccharides, oligosaccharides or disaccharides or derivatives thereof by dissolving these in an ionic liquid and reacting them with a silylating agent.Type: ApplicationFiled: June 19, 2007Publication date: November 12, 2009Applicants: BASF SE, UNIVERSITAET SIEGENInventors: Klemens Massonne, Veit Stegmann, Giovanni D'Andola, Werner Mormann, Markus Wezstein, Wei Leng
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Publication number: 20090187016Abstract: The present invention describes a process for preparing acetals of polysaccharides, oligosaccharides or disaccharides by dissolving these in at least one ionic liquid and reacting them with a vinyl ether. The acetalated polysaccharides or oligosaccharides obtained in this way can be crosslinked by treatment with acid. The present invention also provides acetals of polysaccharides, oligosaccharides or disaccharides and also crosslinked polysaccharides or oligosaccharides.Type: ApplicationFiled: June 28, 2007Publication date: July 23, 2009Applicant: BASF SEInventors: Klemens Massone, Veit Stegmann, Giovanni D'Andola, Werner Mormann, Markus Wezstein, Wei Leng
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Publication number: 20090182138Abstract: The present invention describes a process for acylating polysaccharides or oligosaccharides, which comprises dissolving a polysaccharide or oligosaccharide in at least one ionic liquid and, in step A) treating the solution with at least one acid, if appropriate with addition of water, (step A1) or, if appropriate with addition of water, at elevated temperature (step A2) and, in step B) reacting the polysaccharide or oligosaccharide obtained in this way, whose DP is lower than that of the polysaccharide or oligosaccharide used, with an acylating agent.Type: ApplicationFiled: June 20, 2007Publication date: July 16, 2009Applicant: BASF SEInventors: Klemens Massonne, Veit Stegmann, Giovanni D'Andola, Werner Mormann, Markus Wezstein, Wei Leng
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Publication number: 20090062524Abstract: The present invention describes a process for the degradation of cellulose by dissolving the cellulose in an ionic liquid and treating it with an acid, if appropriate with addition of water.Type: ApplicationFiled: February 28, 2007Publication date: March 5, 2009Applicant: BASF SEInventors: Klemens Massonne, Giovanni D'Andola, Veit Stegmann, Werner Mormann, Markus Wezstein, Wei Leng
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Publication number: 20090020112Abstract: The present invention describes a process for the degradation of cellulose by dissolving the cellulose in an ionic liquid and treating it at elevated temperature, if appropriate in the presence of water.Type: ApplicationFiled: February 28, 2007Publication date: January 22, 2009Applicant: BASF SEInventors: Klemens Massonne, Giovanni D'Andola, Veit Stegmann, Werner Mormann, Markus Wezstein, Wei Leng, Stephan Freyer