Patents by Inventor Ayana TAKEMURA
Ayana TAKEMURA 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: 11807825Abstract: Provided are a lubricant composition which is advantageous in that, when applied to a contact area of metal parts, the lubricant composition can suppress generation of rust and can exhibit excellent lubricating performance, and a bearing the lubricant composition having sealed therein. A lubricant composition comprising at least one dicyclic liquid crystal compound represented by the following formula (1), at least one tricyclic liquid crystal compound represented by the following formula (2), and halogen ions, wherein the content of the halogen ions in the lubricant composition is 1 to 900 ppm.Type: GrantFiled: August 11, 2020Date of Patent: November 7, 2023Assignees: NIPPON THOMPSON CO., LTD., Ushio Chemix CorporationInventors: Kazuo Okamoto, Hiroyuki Otsuki, Shigemasa Itabashi, Ayana Takemura
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Patent number: 11674102Abstract: Provided is a lubricant composition including a bicyclic liquid crystal of formula (1), and a tricyclic liquid crystal compound of formula (2), and having a mixing mass ratio of the bicyclic liquid crystal compound and tricyclic liquid crystal compound of 95:5 to 15:85. The composition is suitable for use in a clean environment, under a high vacuum, under high temperature and a bearing. R1 and R2 are the same or different from each other, and each is —OCH2CH2CH(R?)CH2CH2OR R11 and R21 are the same or different from each other, and each is —OR. R12, R13, R22 and R23 are the same or different from each other, and each is hydrogen or —OR. R is a linear or branched CnH2n+1, 1?n?20 and R? is methyl or ethyl.Type: GrantFiled: May 24, 2022Date of Patent: June 13, 2023Assignees: UNIVERSITY OF YAMANASHI, NIPPON THOMPSON CO., LTD., Ushio Chemix CorporationInventors: Yuichiro Haramoto, Shigemasa Itabashi, Ayana Takemura, Kazuo Okamoto, Hiroyuki Otsuki
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Publication number: 20220372387Abstract: Provided is a lubricant composition including a bicyclic liquid crystal of formula (1), and a tricyclic liquid crystal compound of formula (2), and having a mixing mass ratio of the bicyclic liquid crystal compound and tricyclic liquid crystal compound of 95:5 to 15:85. The composition is suitable for use in a clean environment, under a high vacuum, under high temperature and a bearing. R1 and R2 are the same or different from each other, and each is —OCH2CH2CH(R?)CH2CH2OR R11 and R21 are the same or different from each other, and each is —OR. R12, R13, R22 and R23 are the same or different from each other, and each is hydrogen or —OR. R is a linear or branched CnH2n+1, 1?n?20 and R? is methyl or ethyl.Type: ApplicationFiled: May 24, 2022Publication date: November 24, 2022Applicants: UNIVERSITY OF YAMANASHI, NIPPON THOMPSON CO., LTD., Ushio Chemix CorporationInventors: Yuichiro Haramoto, Shigemasa Itabashi, Ayana Takemura, Kazuo Okamoto, Hiroyuki Otsuki
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Publication number: 20220364009Abstract: Provided are a lubricant composition which is advantageous in that, when applied to a contact area of metal parts, the lubricant composition can suppress generation of rust and can exhibit excellent lubricating performance, and a bearing the lubricant composition having sealed therein. A lubricant composition comprising at least one dicyclic liquid crystal compound represented by the following formula (1), at least one tricyclic liquid crystal compound represented by the following formula (2), and halogen ions, wherein the content of the halogen ions in the lubricant composition is 1 to 900 ppm.Type: ApplicationFiled: August 11, 2020Publication date: November 17, 2022Applicants: NIPPON THOMPSON CO., LTD., Ushio Chemix CorporationInventors: Kazuo Okamoto, Hiroyuki Otsuki, Shigemasa Itabashi, Ayana Takemura
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Patent number: 11447711Abstract: This is to provide an electrically-conductive lubricant having characteristics in combination that it shows liquid crystallinity in a wide temperature range, retains low dynamic friction coefficient, has electrical-conductivity, has almost no loss due to evaporation, decomposition and the like, has a clean appearance, and emits fluorescence, and can find deterioration or leakage immediately. This electrically-conductive lubricant comprises at least one kind of the compound (1) represented by the formula (1): 12:8 wherein, R11 and R21 are the same or different from each other, and each is hydrogen or a group —OCH2CH2CH(R?)CH2CH2OR (R is a linear or branched CnH2n+1, 4?n?12, and R? is methyl or ethyl), and R12, R13, R22 and R23 are the same or different from each other, and each is a group —OCH2CH2CH(R?)CH2CH2OR (R is a linear or branched CnH2n+1, 4?n?12, and R? is methyl or ethyl)].Type: GrantFiled: July 16, 2019Date of Patent: September 20, 2022Assignees: UNIVERSITY OF YAMANASHI, NIPPON THOMPSON CO., LTD., Ushio Chemix CorporationInventors: Yuichiro Haramoto, Shigemasa Itabashi, Ayana Takemura, Kazuo Okamoto, Hiroyuki Otsuki
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Publication number: 20220282175Abstract: Provided is a lubricant composition including a bicyclic liquid crystal of formula (1), tricyclic liquid crystal compounds of formula (2), and formula (3). The composition is suitable for use in a clean environment, under a high vacuum, under high temperature and a bearing. R1 and R2 are the same or different from each other, and each is —OCH2CH2CH(R?)CH2CH2OR. R11 and R21 are the same or different from each other, and each is —OR. R12, R13, R22 and R23 are the same or different from each other, and each is hydrogen or a group —OR. R31 and R41 are the same or different from each other, and each is —OCH2CH2CH(R?)CH2CH2OR. R32, R33, R42, and R43 are the same or different from each other, and each is hydrogen or —OCH2CH2CH(R?)CH2CH2OR. R is a linear or branched CnH2n+1, 1?n?20, and R? is methyl or ethyl.Type: ApplicationFiled: May 24, 2022Publication date: September 8, 2022Applicants: UNIVERSITY OF YAMANASHI, NIPPON THOMPSON CO., LTD., Ushio Chemix CorporationInventors: Yuichiro Haramoto, Shigemasa Itabashi, Ayana Takemura, Kazuo Okamoto, Hiroyuki Otsuki
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Publication number: 20210348078Abstract: This is to provide an electrically-conductive lubricant having characteristics in combination that it shows liquid crystallinity in a wide temperature range, retains low dynamic friction coefficient, has electrical-conductivity, has almost no loss due to evaporation, decomposition and the like, has a clean appearance, and emits fluorescence, and can find deterioration or leakage immediately. This electrically-conductive lubricant comprises at least one kind of the compound (1) represented by the formula (1): [wherein, R11 and R21 are the same or different from each other, and each is hydrogen or a group —OCH2CH2CH(R?)CH2CH2OR (R is a linear or branched CnH2n+1, 4?n?12, and R? is methyl or ethyl), and R12, R13, R22 and R23 are the same or different from each other, and each is a group —OCH2CH2CH(R?)CH2CH2OR (R is a linear or branched CnH2n+1, 4?n?12, and R? is methyl or ethyl)].Type: ApplicationFiled: July 16, 2019Publication date: November 11, 2021Applicants: UNIVERSITY OF YAMANASHI, NIPPON THOMPSON CO., LTD., Ushio Chemix CorporationInventors: Yuichiro Haramoto, Shigemasa Itabashi, Ayana Takemura, Kazuo Okamoto, Hiroyuki Otsuki
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Patent number: 11067123Abstract: A linear motion guide unit has sleeves which form return passages and are formed of a high temperature resistant resin material which allows use in a high temperature environment. In the linear motion guide unit, spaces serving as grease pools are formed in the sleeves inserted into insertion holes of a carriage. The sleeves are formed of a thermoplastic resin whose heat distortion temperature is higher than 80° C. Each sleeve is formed by combining split circular members obtained by dividing a cylindrical member into two pieces along the longitudinal direction, and a plurality of grooves which become spaces are formed on the inner circumferential surfaces of the sprit circular members through cutting orthogonal to a parting plane between the split circular members.Type: GrantFiled: December 19, 2019Date of Patent: July 20, 2021Assignee: NIPPON THOMPSON CO., LTD.Inventors: Ayana Takemura, Shigemasa Itabashi
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Publication number: 20210190141Abstract: A linear motion guide unit has sleeves which form return passages and are formed of a high temperature resistant resin material which allows use in a high temperature environment. In the linear motion guide unit, spaces serving as grease pools are formed in the sleeves inserted into insertion holes of a carriage. The sleeves are formed of a thermoplastic resin whose heat distortion temperature is higher than 80° C. Each sleeve is formed by combining split circular members obtained by dividing a cylindrical member into two pieces along the longitudinal direction, and a plurality of grooves which become spaces are formed on the inner circumferential surfaces of the sprit circular members through cutting orthogonal to a parting plane between the split circular members.Type: ApplicationFiled: December 19, 2019Publication date: June 24, 2021Inventors: Ayana TAKEMURA, Shigemasa ITABASHI