Patents by Inventor Ichiro Kaneko
Ichiro Kaneko 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: 5972560Abstract: The invention provides a high molecular weight silicone compound comprising recurring units of the general formula (1) and having a weight average molecular weight of 1,000-50,000. ##STR1## Z is a di- to hexavalent, monocyclic or polycyclic hydrocarbon group or bridged cyclic hydrocarbon group of 5-12 carbon atoms, R.sup.1 is a substituted or unsubstituted alkyl or alkenyl group of 1-8 carbon atoms, R.sup.2 is an acid labile group, m is 0 or an integer, n is an integer, satisfying m+n.ltoreq.5, x is an integer, p1 and p2 are positive numbers, q is 0 or a positive number, satisfying 0<p1/(p1+p2+q).ltoreq.0.9, 0<p2/(p1+p2+q).ltoreq.0.9, 0.ltoreq.q/(p1+p2+q).ltoreq.0.7, and p1+p2+q=1. A chemically amplified positive resist composition comprising the high molecular weight silicone compound as a base resin is sensitive to actinic radiation and has a high sensitivity and resolution so that it is suitable for fine patterning with electron beams or deep UV.Type: GrantFiled: January 30, 1998Date of Patent: October 26, 1999Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Ichiro Kaneko, Mutsuo Nakashima, Toshinobu Ishihara, Junji Tsuchiya, Jun Hatakeyama, Shigehiro Nagura
-
Patent number: 5920594Abstract: In a transversal filter for filtering an input signal (IN) into an output signal (OUT) in response to first through third tap gains (C.sub.-1, C.sub.0, C.sub.1), the transversal filter comprises a serial-parallel converter (40) for converting the input signal into first and second parallel converted signals. Connected to the serial-parallel converter, a delay circuit (10) has first through fourth taps (11-14) and comprises a plurality of delay units (16, 17) each of which is connected between two taps selected from the first through the fourth taps. Each of the delay units provides twice a unit delay which is substantially equal to a reciprocal of an input data rate of the input signal. The first through the fourth taps of the delay circuit produce first through fourth tap signals, respectively.Type: GrantFiled: December 23, 1997Date of Patent: July 6, 1999Assignee: NEC CorporationInventors: Shigeki Maeda, Ichiro Kaneko
-
Patent number: 5793806Abstract: In a transversal filter for filtering an input signal (IN) into an output signal (OUT) in response to first through third tap gains (C.sub.-1, C.sub.0, C.sub.1), the transversal filter comprises a serial-parallel converter (40) for converting the input signal into first and second parallel converted signals. Connected to the serial-parallel converter, a delay circuit (10) has first through fourth taps (11-14) and comprises a plurality of delay units (16, 17) each of which is connected between two taps selected from the first through the fourth taps. Each of the delay units provides twice a unit delay which is substantially equal to a reciprocal of an input data rate of the input signal. The first through the fourth taps of the delay circuit produce first through fourth tap signals, respectively.Type: GrantFiled: December 21, 1995Date of Patent: August 11, 1998Assignee: NEC CorporationInventors: Shigeki Maeda, Ichiro Kaneko
-
Patent number: 5772925Abstract: An anti-reflective coating composition comprising a polyimide dissolved in an organic solvent is used to form an anti-reflective coating beneath a chemical amplification type resist layer. The composition allows a fine resist pattern to be formed with high accuracy in a convenient, efficient, reproducible manner.Type: GrantFiled: July 10, 1997Date of Patent: June 30, 1998Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Satoshi Watanabe, Toshinobu Ishihara, Ichiro Kaneko, Katsuyuki Oikawa, Yoshihumi Takeda
-
Patent number: 5737000Abstract: An ink-jet head for injecting ink into a work piece, has an ink passage in which the ink is received, and a pair of electrodes in the ink passage for heating electrically and vaporizing thermally the ink to generate an ink-jet toward the work piece, wherein a crystal grain diameter of the electrodes is not less than 0.1 .mu.m, a total orientation deviation of (002) or (011) crystal orientation face of the electrodes with respect to a direction perpendicular to an electrode layer thickness direction is decreased, and/or a surface roughness of the electrodes is not less than 0.005 .mu.m, so that oxidation and corrosion of the electrodes are restrained.Type: GrantFiled: May 17, 1995Date of Patent: April 7, 1998Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroshi Shibata, Shin-ichiro Kaneko, Takashi Kubara, Seishi Tomari, Naoto Yoshida, Hirofumi Kama
-
Patent number: 5494991Abstract: Polyimides comprising recurring units of the following general formula (1) ##STR1## wherein Ar.sub.1 represents a tetravalent aromatic group and each Ar.sub.2 represents a divalent aromatic group. Polyimide copolymers and preparations of the polyimides and the polyimide copolymers are also described.Type: GrantFiled: June 17, 1994Date of Patent: February 27, 1996Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Ichiro Kaneko, Atushi Sugitani, Masahiro Yuyama, Kiyoshi Motomi
-
Patent number: 5478914Abstract: Polyimides comprising recurring units of the following general formula (1) ##STR1## wherein R.sub.1 represents a tetravalent aromatic group. Polyimide copolymers and preparations of the polyimides and the polyimide copolymers are also described.Type: GrantFiled: July 1, 1994Date of Patent: December 26, 1995Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Ichiro Kaneko, Atushi Sugitani, Masahiro Yuyama, Kiyoshi Motomi
-
Patent number: 5431288Abstract: A mail sorting apparatus includes a video signal conversion section for photoelectrically converting and quantizing characters, codes, and the like on a mail item into a video signal, a blank area detection section for detecting a blank area where characters, codes, and the like are not described on the basis of the video signal output from the video signal conversion section, a printing area designation section for designating a bar code printing area in the blank area detected by the blank area detection section, and a bar code printing section for printing a bar code corresponding to an address of the mail item on the printing area designated by the printing area designation section. Further, the printing area designation section designates the bar code printing area from a blank area obtained by excluding a window area detected by a window position detection section from the blank area detected by the blank area detection section.Type: GrantFiled: August 19, 1992Date of Patent: July 11, 1995Assignee: NEC CorporationInventors: Yasuo Nishijima, Ichiro Kaneko, Tokurou Hamada
-
Patent number: 5298220Abstract: This process is a method of preventing polymer scale formation in a polymerization vessel during the polymerization of a monomer having an ethylenically unsaturated double bond. The inner wall surface of a polymerization vessel is coated with a water-based coating solution containing (a) a water-soluble anionic dye and (b) at least water-insoluble cationic dye or water-insoluble nitrogen-containing organic compound, where the water-based coating solution has a pH of 7 or less. The coating solution is applied and then dried to form a coating.Type: GrantFiled: January 5, 1993Date of Patent: March 29, 1994Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Toshihide Shimizu, Ichiro Kaneko, Mikio Watanabe
-
Patent number: 5294684Abstract: A process for producing a vinyl chloride polymer by polymerizing a monomer comprising vinyl chloride by suspension polymerization in a polymerization vessel on the inner wall surface of which a coating of a polymer scale preventive agent is formed, comprising the steps of applying a high-speed shearing force to a mixture comprising water, the monomer, a polymerization initiator, and (A) a dispersant comprising a partially saponified polyvinyl alcohol having a specified average degree of polymerization and a specified degree of saponification plus (B) a dispersant comprising a hydroxypropylmethylcellulose which has a specified methoxyl substitution degree, a specified hydroxypropoxyl substitution degree, and a specified viscosity and subjecting the mixture to said suspension polymerization. A vinyl chloride polymer having an average particle diameter of 200 to 600 .mu.m and a narrow particle size distribution and excellent in plasticizer take-up, etc. is provided.Type: GrantFiled: November 9, 1992Date of Patent: March 15, 1994Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Ichiro Kaneko, Makoto Fujiwara, Tatsuya Fujimoto
-
Patent number: 5292836Abstract: A process for preparation of a vinyl chloride polymer comprising the steps of subjecting an aqueous medium containing vinyl chloride monomer or a mixture of vinyl chloride monomer with other vinyl monomer, a polymerization initiator and a dispersant to high-speed shear agitation at a shear rate of 10.sup.4 sec.sup.-1 or above to prepare a suspended dispersion containing fine particles of the monomer(s) dispersed therein, then subjecting the suspended dispersion to low-speed shear agitation at a shear rate of from 10 to 100 sec.sup.-1, and thereafter starting suspension polymerization. Even with a decreased amount of dispersant, the process inhibits the coarsening of the polymer particles, to yield the polymer with a narrow particle diameter distribution. Deposition of scale and formation of fish-eyes are also prevented effectively.Type: GrantFiled: September 28, 1992Date of Patent: March 8, 1994Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hajime Kitamura, Ichiro Kaneko
-
Patent number: 5286796Abstract: An improvement is proposed in the suspension polymerization of vinyl chloride monomer in order to obtain a polyvinyl chloride resin powder having good absorptivity of plasticizers by virtue of the well developed porosity of the resin particles and containing a decreased amount of fish eyes. The improvement comprises adding, to the polymerization mixture, a water-insoluble partially saponified polyvinyl acetate having an average degree of polymerization of at least 1000 and a degree of saponification of 20 to 60% in combination with a conventional water-soluble polymer as the suspending agent such as water-soluble partially saponified polyvinyl acetates and water-soluble cellulose ethers.Type: GrantFiled: August 27, 1992Date of Patent: February 15, 1994Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Tadashi Amano, Ichiro Kaneko
-
Patent number: 5253303Abstract: A character recognizing method includes steps of detecting a character using an end of the character line as a start point, normalizing the detected character, comparing the normalized value with a predetermined standard pattern, and detecting a point having a minimum distance difference from the standard pattern as a segmentation point between neighboring characters.Type: GrantFiled: November 22, 1991Date of Patent: October 12, 1993Assignee: NEC CorporationInventors: J. Warren Whitesel, Ichiro Kaneko
-
Patent number: 5248733Abstract: Matte vinyl chloride polymers are prepared by suspension polymerizing a vinyl chloride monomer or a vinyl monomer mixture mainly comprising vinyl chloride in an aqueous medium in the presence of (A) a polyfunctional monomer having at least two ethylenic double bonds in a molecule and (B) a polymeric matting agent containing 3 to 25% by weight of a tetrahydrofuran-insoluble gel fraction. The polymers are effectively moldable and present uniform matte effect.Type: GrantFiled: July 8, 1991Date of Patent: September 28, 1993Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Hajime Kitamura, Ichiro Kaneko
-
Patent number: 5235012Abstract: An improved method for the suspension polymerization is proposed which gives a PVC resin product having an increased plasticizer absorptivity and greatly decreased content of fish eyes. The invention can be achieved by additionally adding a limited volume of water into the polymerization mixture under proceeding of the polymerization reaction within a specified period of 30 to 70% monomer conversion and at such a controlled rate as not to unduly decrease the pressure inside of the reactor.Type: GrantFiled: April 21, 1992Date of Patent: August 10, 1993Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Ichiro Kaneko, Tadashi Amano, Toshimichi Koga
-
Patent number: 5229471Abstract: A method of preventing polymer scale deposition during polymerization of a monomer having an ethylenically double bond in a polymerization vessel, comprising the step of carrying out said polymerization in a polymerization vessel of which the inner wall surface has a coating comprising:(A) a polyvinyl alcohol, and(B) a water-soluble polymeric compound having a carboxyl group which may be in the form of a salt, and a polymer scale preventive agent comprising said (A) and (B). Deposition of polymer scale can be effectively prevented. Since the components (A) and (B) have no poisonousness, safety of operators are ensured.Type: GrantFiled: September 6, 1990Date of Patent: July 20, 1993Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Toshihide Shimizu, Susumu Ueno, Ichiro Kaneko, Mikio Watanabe
-
Patent number: 5214112Abstract: A method of preventing polymer scale deposition during polymerization of a monomer having an ethylenically double bond in a polymerization vessel, comprising the step of carrying out said polymerization in a polymerization vessel of which the inner wall surface has a coating comprising:(A) a water-soluble nitrogen-containing cationic polymeric compound, and(B) a water-soluble anionic polymeric compound; and a polymer scale preventive agent comprising said (A) and (B). Polymer scale deposition is effectively prevented, and polymers with high whiteness can be prepared.Type: GrantFiled: September 6, 1990Date of Patent: May 25, 1993Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Toshihide Shimizu, Susumu Ueno, Ichiro Kaneko, Mikio Watanabe
-
Patent number: 5214113Abstract: A method of preventing polymer scale deposition during polymerization of a monomer having an ethylenically double bond in a polymerization vessel, comprising the step of carrying out said polymerization in a polymerization vessel of which the inner wall surface has a coating comprising:(A) a lignin, and(B) a cellulose derivative; and a polymer scale preventive agent comprising said components (A) and (B).Deposition of polymer scale can be effectively prevented; polymers with high whiteness can be prepared; the scale preventive agent used has no poisonousness and are highly safe, therefore this method can be performed with high safe.Type: GrantFiled: September 6, 1990Date of Patent: May 25, 1993Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Toshihide Shimizu, Susumu Ueno, Ichiro Kaneko, Mikio Watanabe
-
Patent number: 5196164Abstract: This process is a method of preventing polymer scale formation in a polymerization vessel during the polymerization of a monomer having an ethylenically unsaturated double bond. The inner wall surface of a polymerization vessel is coated with a water-based coating solution containing (A) a water-soluble anionic dye and (B) at least one water-insoluble cationic dye or water-insoluble nitrogen-containing organic compound, where the water-based coating solution has a pH of 7 or less. The coating solution is applied and then dried to form a coating.Type: GrantFiled: August 9, 1989Date of Patent: March 23, 1993Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Toshihide Shimizu, Ichiro Kaneko, Mikio Watanabe
-
Patent number: 5130386Abstract: A method of preventing polymer scale deposition in a polymerization vessel during polymerization of a monomer having an ethylenically double bond, wherein said polymerization is carried out in a polymerization vessel of which the inner wall has been previously coated with a coating solution containing(A) a tannin, and(B) a water-soluble polymeric compound, followed by drying to form a coating; a scale preventive agent comprising the components (A) and (B); and a polymerization vessel having said coating on the inner wall thereof. Polymer scale deposition on the inner wall, etc. of the polymerization vessel can be effectively prevented.Type: GrantFiled: March 1, 1990Date of Patent: July 14, 1992Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Ichiro Kaneko, Toshihide Shimizu, Susumu Ueno, Mikio Watanabe