Patents by Inventor Osamu Kurosawa

Osamu Kurosawa 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).

  • Patent number: 9487726
    Abstract: The present invention provides an imide compound represented by the following general formula (1). The imide compound of the present invention, particularly when used as a thickening agent for grease, is excellent in durability at high temperatures. [wherein X represents a tetravalent residue obtained by removing four carboxylic groups from an aromatic tetracarboxylic acid, Y represents a divalent residue obtained by removing two amino groups from an aliphatic diamine or an aromatic diamine, and R represents a residue obtained by removing an amino group from an aliphatic monoamine, an alicyclic monoamine, or an aromatic monoamine.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: November 8, 2016
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Kentaro Yamaguchi, Osamu Kurosawa, Miki Fujiwara, Ryuichi Ueno
  • Patent number: 9150810
    Abstract: An additive for lubricating oil of the present invention contains an amide compound represented by the following general formula (1). A lubricating oil composition of the present invention contains: a lubricating base oil containing a mineral base oil and/or a synthetic base oil; and an amide compound represented by the following general formula (1). R1R2N—COCH2OH??(1) (In the general formula (1), R1 and R2 may be the same or different and each represents an alkyl group having 16 to 22 carbon atoms.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: October 6, 2015
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Osamu Kurosawa, Yasushi Onumata
  • Publication number: 20150218483
    Abstract: The present invention provides a grease composition for constant velocity joints containing a lubricating base oil, at least one thickener selected from urea-based thickeners, urethane-based thickeners and urea/urethane-based thickeners, an organomolybdenum, a zinc dithiophosphate, a polysulfide, and a triglyceride, wherein the content of the organomolybdenum is 1000-5000 ppm by mass in terms of molybdenum element based on the total amount of the grease composition. According to the grease composition, it is possible to exert sufficient characteristics even in the case of reducing the amount of the additive such as molybdenum disulfide.
    Type: Application
    Filed: August 27, 2013
    Publication date: August 6, 2015
    Applicants: NTN CORPORATION, JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Shinichi Takabe, Takashi Arai, Kiyomi Sakamoto, Osamu Kurosawa
  • Patent number: 9012380
    Abstract: The lubricating base oil of the invention is characterized by satisfying at least one of the following conditions (a) or (b). (a) A saturated compound content of 95% by mass or greater, and a proportion of 0.1-10% by mass of cyclic saturated compounds among the saturated compounds. (b) The condition represented by the following formula (1). 1.435?n20?0.002×kv100?1.450??(1) wherein n20 represents the refractive index of the lubricating base oil at 20° C., and kv100 represents the kinematic viscosity (mm2/s) of the lubricating base oil at 100° C.
    Type: Grant
    Filed: January 10, 2006
    Date of Patent: April 21, 2015
    Assignees: Nippon Oil Corporation, Petroleum Energy Center
    Inventors: Takashi Sano, Hitoshi Komatsubara, Hisayuki Wada, Osamu Kurosawa, Masaaki Itou, Shigeki Matsui, Masato Takahashi, Kai Fu, Shinichi Shirahama, Izuru Sugiura, Masahiro Taguchi, Shozaburo Konishi
  • Patent number: 8728997
    Abstract: The present invention provides a lubricating oil composition which is less in evaporation loss even having a low viscosity and excellent in lubricating properties such as low-temperature viscosity characteristics and anti-seizure properties and in oxidation stability, suitable for use in engines, automatic transmissions, manual transmissions, final reduction gear units, and continuously variable transmissions. The lubricating oil composition comprises (A) a lubricating base oil and (B) a poly(meth)acrylate additive in such an amount that the kinematic viscosity at 100° C. of the composition (Vc) is from 3 to 15 mm2/s, the viscosity index of the composition is from 95 to 200, and the ratio of the kinematic viscosity at 100° C. of (A) the lubricating base oil (Vb) to (Vc) (=Vb/Vc) is 0.60 or greater, further, (C) a metallic detergent, (D) an ashless dispersant and (E) zinc dithiophosphate, each in a specific amount.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: May 20, 2014
    Assignee: Nippon Oil Corporation
    Inventors: Osamu Kurosawa, Masaaki Itou, Masato Takahashi
  • Publication number: 20140045735
    Abstract: The present invention provides a grease composition containing at least one lubricating base oil selected from a mineral oil and a synthetic oil, and 1 to 40% by mass of a thickener and 0.5 to 15% by mass of an alkenyl succinimide based on the total amount of the grease composition, the grease composition being used for a lubricating part in which at least one of members is made of a non-ferrous metal. According to the grease composition of the present invention, galling (seizure) and wear can be sufficiently suppressed and sliding properties can be achieved at a high level even in the case where sliding is performed under extreme pressure conditions where a sliding part having a non-ferrous metal is subjected to a high load.
    Type: Application
    Filed: March 26, 2012
    Publication date: February 13, 2014
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Yusuke Ayame, Osamu Kurosawa, Kiyomi Sakamoto
  • Publication number: 20130345102
    Abstract: The present invention provides an imide compound represented by the following general formula (1). The imide compound of the present invention, particularly when used as a thickening agent for grease, is excellent in durability at high temperatures. [wherein X represents a tetravalent residue obtained by removing four carboxylic groups from an aromatic tetracarboxylic acid, Y represents a divalent residue obtained by removing two amino groups from an aliphatic diamine or an aromatic diamine, and R represents a residue obtained by removing an amino group from an aliphatic monoamine, an alicyclic monoamine, or an aromatic monoamine.
    Type: Application
    Filed: January 6, 2012
    Publication date: December 26, 2013
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Kentaro Yamaguchi, Osamu Kurosawa, Miki Fujiwara, Ryuichi Ueno
  • Patent number: 8394745
    Abstract: The present invention provides a lubricating base oil comprising saturated components of 90% by mass or greater, wherein the proportion of cyclic saturated components among the saturated components is not greater than 40% by mass, and by having a viscosity index of 110 or higher and an iodine value of not greater than 2.5. The lubricating base oil of the invention exhibits excellent viscosity-temperature characteristics and heat and oxidation stability while also allowing additives to exhibit a higher level of function when additives are included. The lubricating base oil of the invention is suitable for use in various lubricating oil fields, and is especially useful for reducing energy loss and achieving energy savings in devices in which the lubricating base oil is applied.
    Type: Grant
    Filed: March 28, 2007
    Date of Patent: March 12, 2013
    Assignees: Nippon Oil Corporation, Petroleum Energy Center
    Inventors: Takashi Sano, Shinichi Shirahama, Kazuo Tagawa, Kenichi Komiya, Shigeki Matsui, Osamu Kurosawa
  • Publication number: 20130005632
    Abstract: An additive for lubricating oil of the present invention contains an amide compound represented by the following general formula (1). A lubricating oil composition of the present invention contains: a lubricating base oil containing a mineral base oil and/or a synthetic base oil; and an amide compound represented by the following general formula (1). R1R2N—COCH2OH??(1) (In the general formula (1), R1 and R2 may be the same or different and each represents an alkyl group having 16 to 22 carbon atoms.
    Type: Application
    Filed: March 15, 2011
    Publication date: January 3, 2013
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Osamu Kurosawa, Yasushi Onumata
  • Patent number: 8105990
    Abstract: The lubricating base oil of the invention satisfies at least one of conditions (a) or (b) below. The lubricating oil composition for an internal combustion engine according to the invention comprises the lubricating base oil of the invention, an ashless antioxidant containing essentially no sulfur as a constituent element, and at least one compound selected from among ashless antioxidants containing sulfur as a constituent element and organic molybdenum compounds. Also, a lubricating oil composition for a power train device according to the invention comprises the lubricating base oil of the invention, a poly(meth)acrylate-based viscosity index improver and a phosphorus-containing compound. (a) The saturated component content is 90% by mass or greater, and the proportion of cyclic saturated components among the saturated components is 10-40% by mass. (b) The condition represented by the following formula (1) is satisfied. 1.440?n20?0.002×kv100?1.453??(1) [wherein n20 represents the 20° C.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: January 31, 2012
    Assignees: Nippon Oil Corporation, Petroleum Energy Center
    Inventors: Shinichi Shirahama, Masahiro Taguchi, Kazuo Tagawa, Takashi Sano, Shozaburo Konishi, Shigeki Matsui, Osamu Kurosawa
  • Patent number: 7704928
    Abstract: Provided is a lubricating oil composition for manual transmissions which has anti-seizure properties for shift forks and can provide manual transmissions with excellent shifting characteristics though it has a low viscosity and can save fuel to be used in automobiles. The lubricating oil composition for manual transmissions comprises a lubricating base oil with a kinematic viscosity at 100° C. of 4 to 6 mm2/s, on the basis of the total mass of the composition, (A) 0.14 to 0.20 percent by mass in terms of magnesium of magnesium sulfonate, (B) 0.14 to 0.18 percent by mass in terms of zinc of a specific zinc dithiophosphate, (C) 0.3 to 0.5 percent by mass in terms of sulfur of a sulfur-containing extreme pressure additive other than zinc dithiophosphate, and (D) 0.02 to 0.05 percent by mass in terms of phosphorus of an alkyl phosphite, and having a kinematic viscosity at 40° C. of 25 to 30 mm2/s.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: April 27, 2010
    Assignees: Nippon Oil Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Osamu Kurosawa, Masato Takahashi, Toru Matsuoka, Kazuo Yamamori, Koji Saito, Tetuzo Yoneda, Yoshikazu Yamamoto, Akihiko Ichikawa
  • Publication number: 20100041572
    Abstract: The present invention provides a lubricating base oil comprising saturated components of 90% by mass or greater, wherein the proportion of cyclic saturated components among the saturated components is not greater than 40% by mass, and by having a viscosity index of 110 or higher and an iodine value of not greater than 2.5. The lubricating base oil of the invention exhibits excellent viscosity-temperature characteristics and heat and oxidation stability while also allowing additives to exhibit a higher level of function when additives are included. The lubricating base oil of the invention is suitable for use in various lubricating oil fields, and is especially useful for reducing energy loss and achieving energy savings in devices in which the lubricating base oil is applied.
    Type: Application
    Filed: March 28, 2007
    Publication date: February 18, 2010
    Inventors: Takashi Sano, Shinichi Shirahama, Kazuo Tagawa, Kenichi Komiya, Shigeki Matsui, Osamu Kurosawa
  • Publication number: 20100035777
    Abstract: The lubricating base oil of the invention is characterized by satisfying at least one of the following conditions (a) or (b). (a) A saturated compound content of 95% by mass or greater, and a proportion of 0.1-10% by mass of cyclic saturated compounds among the saturated compounds. (b) The condition represented by the following formula (1). 1.435?n20?0.002×kv100 ?1.450??(1) wherein n20 represents the refractive index of the lubricating base oil at 20° C., and kv100 represents the kinematic viscosity (mm2/s) of the lubricating base oil at 100° C.
    Type: Application
    Filed: January 10, 2006
    Publication date: February 11, 2010
    Inventors: Takashi Sano, Hitoshi Komatsubara, Hisayuki Wada, Osamu Kurosawa, Masaaki Itou, Shigeki Matsui, Masato Takahashi, Kai Fu, Shinichi Shirahama, Izuru Sugiura, Masahiro Taguchi, Shozaburo Konishi
  • Publication number: 20100016195
    Abstract: The lubricating base oil of the invention satisfies at least one of conditions (a) or (b) below. The lubricating oil composition for an internal combustion engine according to the invention comprises the lubricating base oil of the invention, an ashless antioxidant containing essentially no sulfur as a constituent element, and at least one compound selected from among ashless antioxidants containing sulfur as a constituent element and organic molybdenum compounds. Also, a lubricating oil composition for a power train device according to the invention comprises the lubricating base oil of the invention, a poly(meth)acrylate-based viscosity index improver and a phosphorus-containing compound. (a) The saturated component content is 90% by mass or greater, and the proportion of cyclic saturated components among the saturated components is 10-40% by mass. (b) The condition represented by the following formula (1) is satisfied. 1.440?n20?0.002×kv100?1.453 (1) [wherein n20 represents the 20° C.
    Type: Application
    Filed: March 14, 2007
    Publication date: January 21, 2010
    Inventors: Shinichi Shirahama, Masahiro Taguchi, Kazuo Tagawa, Takashi Sano, Shozaburo Konishi, Shigeki Matsui, Osamu Kurosawa
  • Publication number: 20090131291
    Abstract: The present invention provides a lubricating oil composition which is less in evaporation loss even having a low viscosity and excellent in lubricating properties such as low-temperature viscosity characteristics and anti-seizure properties and in oxidation stability, suitable for use in engines, automatic transmissions, manual transmissions, final reduction gear units, and continuously variable transmissions. The lubricating oil composition comprises (A) a lubricating base oil and (B) a poly(meth)acrylate additive in such an amount that the kinematic viscosity at 100° C. of the composition (Vc) is from 3 to 15 mm2/s, the viscosity index of the composition is from 95 to 200, and the ratio of the kinematic viscosity at 100° C. of (A) the lubricating base oil (Vb) to (Vc) (=Vb/Vc) is 0.60 or greater, further, (C) a metallic detergent, (D) an ashless dispersant and (E) zinc dithiophosphate, each in a specific amount.
    Type: Application
    Filed: April 19, 2007
    Publication date: May 21, 2009
    Applicant: NIPPON OIL CORPORATION
    Inventors: Osamu Kurosawa, Masaaki Itou, Masato Takahashi
  • Publication number: 20080146474
    Abstract: The invention provides a lubricating oil composition comprising a lubricating base oil, a phosphorus compound and at least one organic acid salt selected from among alkaline earth metal sulfonates, alkaline earth metal phenates and alkaline earth metal salicylates, wherein the contents of the phosphorus compound and organic acid salt satisfy the conditions represented by the following formulas (1) to (3). In formulas (1)-(3), W(P) represents the content of phosphorus compound, in terms of phosphorus element, based on the total amount of the lubricating oil composition, and W(M) represents the content of organic acid salt content, in terms of alkaline earth metal elements, based on the total amount of the lubricating oil composition. 0.01?W(P)?0.2 ??(1) 0.01?W(M)?0.2 ??(2) 0.
    Type: Application
    Filed: November 24, 2005
    Publication date: June 19, 2008
    Inventors: Masato Takahashi, Osamu Kurosawa, Junji Ando, Toshiyuki Saito, Hirofumi Kuwabara, Hajime Fukami, Toshifumi Sakai, Mototake Furuhashi
  • Publication number: 20070265175
    Abstract: Provided is a lubricating oil composition for manual transmissions which has anti-seizure properties for shift forks and can provide manual transmissions with excellent shifting characteristics though it has a low viscosity and can save fuel to be used in automobiles. The lubricating oil composition for manual transmissions comprises a lubricating base oil with a kinematic viscosity at 100° C. of 4 to 6 mm2/s, on the basis of the total mass of the composition, (A) 0.14 to 0.20 percent by mass in terms of magnesium of magnesium sulfonate, (B) 0.14 to 0.18 percent by mass in terms of zinc of a specific zinc dithiophosphate, (C) 0.3 to 0.5 percent by mass in terms of sulfur of a sulfur-containing extreme pressure additive other than zinc dithiophosphate, and (D) 0.02 to 0.05 percent by mass in terms of phosphorus of an alkyl phosphite, and having a kinematic viscosity at 40° C. of 25 to 30 mm2/s.
    Type: Application
    Filed: November 29, 2006
    Publication date: November 15, 2007
    Applicants: NIPPON OIL CORPORATION, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Osamu KUROSAWA, Masato TAKAHASHI, Toru MATSUOKA, Kazuo YAMAMORI, Koji SAITO, Tetuzo YONEDA, Yoshikazu YAMAMOTO, Akihiko ICHIKAWA
  • Publication number: 20070184446
    Abstract: To verify an action of a high-frequency ac electric field on a single-stranded nucleic acid existing in an aqueous solution. This action is used to improve the efficiency of hybridization to which the single-stranded nucleic acid is subjected as a complementary strand. Provided are a method and system for stretching a single-stranded nucleic acid, which exists in a free form in pure water or an aqueous solution (R) of pH 5 to 11, or which exists in a form immobilized on one of surface (f) of an electrode (E) of opposing electrodes (E,E) arranged facing the aqueous solution (R) or in a form immobilized on surfaces (f) of both electrodes (E) of opposing electrodes (E, E), by causing a high-frequency ac electric field to act on the single-stranded nucleic acid.
    Type: Application
    Filed: October 6, 2004
    Publication date: August 9, 2007
    Inventors: Sayoko Matsumoto, Takayoshi Mamine, Masao Washizu, Osamu Kurosawa
  • Publication number: 20040176256
    Abstract: Lubricating oil compositions for transmissions comprise (A) a mineral lubricating oil having a kinematic viscosity of from 2.3 to 3.4 mm2/s and a % Cp of 70 or higher defined by ASTM D 3238, as a base oil, (B) a phosphorus compound in an amount of from 0.025 to 0.05 percent by mass in terms of phosphorus based on the total mass of the composition, and (C) a viscosity index improver in such an amount that the composition has a kinematic viscosity of from 5.0 to 6.0 mm2/s, sulfur being contained in an amount of 0.15 percent by mass or less in the composition. The lubricating oil compositions are excellent in fuel efficiency and capable of improving the durabilities of gears and clutches, leading to long lasting gear change characteristics.
    Type: Application
    Filed: November 4, 2003
    Publication date: September 9, 2004
    Applicants: Nippon Oil Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Osamu Kurosawa, Shigeki Matsui, Eitaro Morita, Kazuo Yamamori, Hiroyuki Arai
  • Publication number: 20040115719
    Abstract: Proposed is a method comprising the steps of stretching and arranging DNA while immobilizing it on a board, cutting it into fragments sequentially from one end, analyzing the respective fragments, connecting the analyzed results for analyzing the entire base sequence of the original DNA. For practically applying this method, required is a method of efficiently recovering DNA fragments without disturbing the original base sequence.
    Type: Application
    Filed: October 24, 2003
    Publication date: June 17, 2004
    Inventors: Koji Horio, Masao Washizu, Osamu Kurosawa