Patents by Inventor Go Watanabe
Go Watanabe 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: 20240174942Abstract: A grease composition, containing a base oil (A), a urea-based thickener (B), and a polymer compound (C). The particles that make up the urea-based thickener (B) in the grease composition satisfy the following requirement (I): the particles have an arithmetic average particle diameter on an area basis as measured by a laser diffraction/scattering method of 2.0 ?m or less, and the polymer compound (C) has a number average molecular weight (Mn) of 30,000 or more and a molecular weight distribution (Mw/Mn) of 2.20 or less.Type: ApplicationFiled: March 31, 2022Publication date: May 30, 2024Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Keisuke INDA, Go WATANABE, Kouji TAKANE
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Publication number: 20240174943Abstract: A grease composition, containing a base oil (A), a urea-based thickener (B), and melamine cyanurate (C). Particles containing the urea-based thickener (B) in the grease composition satisfy the following requirement (I): the particles have an area-based arithmetic average particle diameter of 2.0 ?m or less, as measured by a laser diffraction/scattering method.Type: ApplicationFiled: March 31, 2022Publication date: May 30, 2024Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Go WATANABE, Keisuke INDA, Kouji TAKANE
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Patent number: 11760951Abstract: The present invention addresses a problem of providing a grease composition containing a urea-based thickener and capable of appropriately maintaining the kinematic friction force in lubrication parts. The grease composition contains a base oil (A) and a urea-based thickener (B), wherein the base oil (A) has a kinematic viscosity at 40° C. of 100 mm2/s or more, and the particles containing the urea-based thickener (B) in the grease composition satisfy the following requirement (I). Requirement (I): the area-based arithmetic average particle diameter of the particles is 2.0 ?m or less, as measured by a laser diffraction/scattering method.Type: GrantFiled: February 27, 2020Date of Patent: September 19, 2023Assignee: IDEMITSU KOSAN CO. , LTD.Inventor: Go Watanabe
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Patent number: 11746303Abstract: The present invention relates to a grease composition which can impart excellent durability to a bearing used under a high-speed rotation condition with a DN value of 100,000 or more, wherein the grease composition contains a base oil (A) and a urea-based thickener (B), and particles containing the urea-based thickener (B) in the grease composition satisfy requirement (I) that the particles have an arithmetic mean particle diameter of 2.0 ?m or less on an area basis when measured by a laser diffraction scattering method. The grease composition is used for a bearing used under a high-speed rotation condition with a DN value of 100,000 or more.Type: GrantFiled: January 31, 2020Date of Patent: September 5, 2023Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Kouji Takane, Go Watanabe, Akihiro Shishikura, Jun Yamashita
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Publication number: 20230203116Abstract: An object is to provide a peptide gelling agent which gels under physiological conditions and which has a relatively short chain length, and a sustained-release gel based on it. Provided is a hydrogelling self-assembling peptide comprising one or two core peptides consisting of an amino acid sequence represented by the following formula: Xaa-Yaa-Zaa-Yaa-Xaa-Yaa-Zaa-Yaa-Xaa, wherein Xaa is independently Ile or Met, Yaa is independently Asp, Glu, Lys, or Arg, and Zaa is independently Ala or Gly, and wherein the full length of the amino acid sequence constituting said self-assembling peptide is 25 amino acids or less.Type: ApplicationFiled: July 29, 2021Publication date: June 29, 2023Applicants: NATIONAL UNIVERSITY CORPORATION TOKYO MEDICAL AND DENTAL UNIVERSITY, KANAGAWA INSTITUTE OF INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Takahiro MURAOKA, Atsuya YAGUCHI, Itsuki AJIOKA, Go WATANABE
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Publication number: 20230128223Abstract: A grease composition may contain a base oil (A) and a urea-based thickener (B). Particles containing the urea-based thickener (B) in the grease composition may satisfy requirement (I). The base oil (A) may be a mixed base oil containing a high-viscosity base oil (A1) having a kinematic viscosity at 40° C. of 250 mm2/s to 550 mm2/s, a low-viscosity base oil (A2) having a kinematic viscosity at 40° C. of 5.0 mm2/s to 110 mm2/s, and an ultra-high viscosity hydrocarbon-based synthetic oil (A3) having a number average molecular weight (Mn) of 2,500 to 4,500 and a kinematic viscosity at 40° C. of 25,000 mm2/s to 50,000 mm2/s. The base oil (A) may have a kinematic viscosity at 40° C. of 25 mm2/s to 105 mm2/s and a viscosity index of 120 or more. Both low-temperature characteristics and a lubricating life can be achieved.Type: ApplicationFiled: March 16, 2021Publication date: April 27, 2023Applicant: IDEMITSU KOSAN CO.,LTD.Inventor: Go WATANABE
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Publication number: 20230124121Abstract: A grease composition which contains a base oil (A), a urea-based thickener (B), a sarcosine derivative (C), and a fatty acid zinc salt (D), wherein particles containing the urea-based thickener (B) in the grease composition satisfies Requirement (I). The base oil (A) is a blended base oil containing a high viscosity hydrocarbon-based synthetic oil having a specific kinematic viscosity (A1). A low viscosity hydrocarbon-based synthetic oil having a specific kinematic viscosity (A2). An ultra-high viscosity hydrocarbon-based synthetic oil has a number average molecular weight (Mn) of 2,500 to 4,500 and a specific kinematic viscosity (A3). A 40° C. kinematic viscosity of the base oil (A) is 500 mm2/s to 1,500 mm2/s. A viscosity index of the base oil (A) is 140 or more. A content of the fatty acid zinc salt (D) is 10 mass % to 20 mass % based on a total amount of the grease composition.Type: ApplicationFiled: March 16, 2021Publication date: April 20, 2023Applicant: IDEMITSU KOSAN CO.,LTD.Inventor: Go WATANABE
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Patent number: 11619484Abstract: In order to reliably detect a target object located within a projection area and measure a distance to the detected target object, a distance measurement system includes: a light emitting device including a phase-modulation-type spatial light modulator element, and configured to emit projected light for forming a pattern associated with a phase distribution displayed on a display part of the spatial light modulator element, toward at least two projection areas; a light receiving device for capturing an area including a pattern to be formed by projected light emitted by the light emitting device; and a control device for controlling light emission from the light emitting device, verifying, for each projection area, presence or absence of a target object within the projection area by analyzing imaging data captured by the light receiving device, and measuring a distance to a detected target object.Type: GrantFiled: September 15, 2017Date of Patent: April 4, 2023Assignee: NEC CORPORATIONInventors: Go Watanabe, Fujio Okumura, Shigeru Asai
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Patent number: 11572527Abstract: Provided is a grease composition which contains (A) a mixed base oil containing (A1) a low-viscosity base oil having a kinematic viscosity at 40° C. of 10 to 50 mm2/s and (A2) a high-viscosity base oil having a kinematic viscosity at 40° C. of 200 to 700 mm2/s, (B) a lithium-based thickener and (C) a polymer having a kinematic viscosity at 100° C. of 1,000 to 100,000 mm2/s, and has an apparent viscosity at ?10° C., as measured according to JIS K2220:2013 and at a shear rate of 10 s?1, of 50 to 250 mPa·s. The grease composition is excellent in pumpability and is also excellent in wear resistance under poor lubrication conditions.Type: GrantFiled: December 20, 2018Date of Patent: February 7, 2023Assignee: IDEMITSU KOSAN CO., LTD.Inventor: Go Watanabe
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Publication number: 20220145203Abstract: The present invention addresses a problem of providing a grease composition containing a urea-based thickener and capable of appropriately maintaining the kinematic friction force in lubrication parts. The grease composition contains a base oil (A) and a urea-based thickener (B), wherein the base oil (A) has a kinematic viscosity at 40° C. of 100 mm2/s or more, and the particles containing the urea-based thickener (B) in the grease composition satisfy the following requirement (I). Requirement (I): the area-based arithmetic average particle diameter of the particles is 2.0 ?m or less, as measured by a laser diffraction/scattering method.Type: ApplicationFiled: February 27, 2020Publication date: May 12, 2022Applicant: IDEMITSU KOSAN CO.,LTD.Inventor: Go WATANABE
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Publication number: 20220073837Abstract: The present invention relates to a grease composition which can impart excellent durability to a bearing used under a high-speed rotation condition with a DN value of 100,000 or more, wherein the grease composition contains a base oil (A) and a urea-based thickener (B), and particles containing the urea-based thickener (B) in the grease composition satisfy requirement (I) that the particles have an arithmetic mean particle diameter of 2.0 ?m or less on an area basis when measured by a laser diffraction scattering method. The grease composition is used for a bearing used under a high-speed rotation condition with a DN value of 100,000 or more.Type: ApplicationFiled: January 31, 2020Publication date: March 10, 2022Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Kouji TAKANE, Go WATANABE, Akihiro SHISHIKURA, Jun YAMASHITA
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Patent number: 11254892Abstract: The present invention relates to a grease composition containing a base oil (A), a thickener (B), and an additive (C) composed of at least two selected from a sarcosine derivative (C1), an amine compound (C2), and an amide compound (C3), wherein the content of the component (C) is 0.1 to 10.0% by mass on a basis of the total amount of the grease composition.Type: GrantFiled: January 30, 2019Date of Patent: February 22, 2022Assignee: IDEMITSU KOSAN CO., LTD.Inventor: Go Watanabe
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Patent number: 11237390Abstract: This display system includes: a projection device including a phase-modulation-type spatial light modulator element, a light source radiating light to a display part of the element, and a control circuit controlling the element and the light source; and projecting reflection light of the part of the element; and a reflecting mirror reflecting projection light of the device. The control circuit displays, on the part of the element, a first pattern and a second pattern associated with display information having different definition degrees. The reflecting mirror includes a first reflection region causing reflection light of a portion where the first pattern is displayed to enter, and reflecting the light toward a first display region, and a second reflection region causing reflection light of a portion where the second pattern is displayed to enter, and reflecting the light toward a second display region.Type: GrantFiled: September 15, 2017Date of Patent: February 1, 2022Assignee: NEC CORPORATIONInventors: Go Watanabe, Fujio Okumura
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Patent number: 11198834Abstract: Provided is a grease composition including a base oil (A) containing an alkyl naphthalene (A1) and an aliphatic diurea (B) represented by general formula (b1): R1—NHCONH—R3—NHCONH—R2??(b1) (wherein, R1 and R2 each independently represent a monovalent aliphatic hydrocarbon group having 9 to 20 carbon atoms, and R3 represents a divalent aromatic hydrocarbon group having 6 to 18 carbon atoms), wherein a content of the aliphatic diurea (B) is 20 to 30% by mass based on a total amount of the grease composition.Type: GrantFiled: April 27, 2018Date of Patent: December 14, 2021Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Hiroki Sekiguchi, Go Watanabe
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Patent number: 11172179Abstract: A projection system includes a projector, a controller, and a reflecting mirror in order to project sufficiently bright display information in on a plurality of display areas without distortion. The projector includes a light source, a phase-modulation-type spatial light modulator element, and an optical system. The spatial light modulator element includes a display part displaying a pattern corresponding to the display information, and modulates and emits light radiated on the display part from the light source. The optical system projects modulated light emitted from the spatial light modulator element. The controller generates control conditions for controlling the light source and the spatial light modulator element, based on display conditions acquired from a host system, and controls the light source and the spatial light modulator element, based on the generated control conditions. The reflecting mirror reflects projected light from the projector toward the plurality of display areas.Type: GrantFiled: September 15, 2017Date of Patent: November 9, 2021Assignee: NEC CORPORATIONInventors: Go Watanabe, Fujio Okumura
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Publication number: 20210341736Abstract: This display system includes: a projection device including a phase-modulation-type spatial light modulator element, a light source radiating light to a display part of the element, and a control circuit controlling the element and the light source; and projecting reflection light of the part of the element; and a reflecting mirror reflecting projection light of the device. The control circuit displays, on the part of the element, a first pattern and a second pattern associated with display information having different definition degrees. The reflecting mirror includes a first reflection region causing reflection light of a portion where the first pattern is displayed to enter, and reflecting the light toward a first display region, and a second reflection region causing reflection light of a portion where the second pattern is displayed to enter, and reflecting the light toward a second display region.Type: ApplicationFiled: September 15, 2017Publication date: November 4, 2021Applicant: NEC CORPORATIONInventors: Go WATANABE, Fujio OKUMURA
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Patent number: 11044012Abstract: In order to reliably communicate with a communication object even when a relative positional relationship with the communication object cannot be accurately recognized, an inter-mobile-body communication system includes: a control device which performs control of switching between a first mode of transmitting wide-area signal light, and a second mode of transmitting selective signal light toward a communication object in response to response signal light responding to the wide-area signal light transmitted in the first mode, and performs control of selectively receiving the response signal light from the communication object; and a light transmitting/receiving device which transmits the wide-area signal light in the first mode, transmits the selective signal light toward the communication object in the second mode, and selectively receives the response signal light from the communication object, according to control by the control device.Type: GrantFiled: March 17, 2017Date of Patent: June 22, 2021Assignee: NEC CORPORATIONInventors: Go Watanabe, Satoshi Kyosuna
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Patent number: 11028335Abstract: Provided is a grease composition which is excellent in fire extinguishing performance without water and can suppress fuming, malodor, and liquefaction on burning and a method for producing the grease composition. A grease composition contains a base oil (A), a thickener (B), and a fire retardant (C), wherein the base oil (A) contains a base oil (A1) having a 40° C. kinematic viscosity of 300 mm2/s or more, a sulfur content of 20 ppm by mass or less, and an initial boiling point of 400° C. or higher, the fire retardant (C) is at least one of aluminum hydroxide (C1) and 1,3,5-triazine-1,3,5 (2H, 4H, 6H)-tris(ethanol) (C2), and a content of the fire retardant (C) is 1.0 to 12.0 mass % based on a total amount of the grease composition.Type: GrantFiled: January 17, 2018Date of Patent: June 8, 2021Assignee: IDEMITSU KOSAN CO., LTD.Inventors: Akihiro Shishikura, Tomonobu Takada, Hiroki Sekiguchi, Asami Koga, Go Watanabe, Harutomo Ikeda
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Publication number: 20210095219Abstract: A grease composition containing a base oil (A), a urea-based thickener (B), an antioxidant (C), and a rust inhibitor (D), wherein in a particle size distribution curve obtained by measuring the particle size of particles containing the urea-based thickener (B) in the grease composition on a volume basis with light scattering, a peak indicating the maximum frequency satisfies the following Requirements (I) and (II): (I) a particle size indicating the maximum frequency of the peak is 1.0 ?m or less; and (II) a half width of the peak is 1.0 ?m or less.Type: ApplicationFiled: August 22, 2018Publication date: April 1, 2021Applicant: IDEMITSU KOSAN CO.,LTD.Inventors: Go WATANABE, Akihiro SHISHIKURA, Asami KAGA
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Patent number: 10951308Abstract: In order to reduce wire connections and achieve a wireless communication environment securing a sufficient communication band, the present invention provides a communication apparatus that includes a wireless communication means for transmitting and receiving a wireless signal, an optical communication means for transmitting and receiving spatial light as communication light, and a control means for performing signal conversion in a process for converting the wireless signal and the communication light and setting a transmission destination of the wireless signal and the communication light.Type: GrantFiled: March 17, 2017Date of Patent: March 16, 2021Assignee: NEC CORPORATIONInventors: Go Watanabe, Satoshi Kyosuna