Patents by Inventor Akihiko Shimizu

Akihiko Shimizu 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: 4107097
    Abstract: Polymeric electrolyte complexes are prepared by reacting at least one polymer represented by one of the following formulas: ##STR1## wherein R.sub.1 and R.sub.2 represent hydrogen or alkyl of 1 to 4 carbon atoms; R.sub.3 is --CH.sub.2 --C(R).dbd.CH.sub.2, --(CH.sub.2).sub.m COOC(R).dbd.CH.sub.2,--CH.sub.2).sub.m COOCH.sub.2 --C(R).dbd.CH.sub.2, or --CH.sub.2).sub.m O-C(R).dbd.CH.sub.2,--CH.sub.2).sub.m O-CH.sub.2 -C(R).dbd.CH.sub.2 or ##STR2## wherein R is hydrogen or methyl, m is a number from 1 to 3 and n is 0 or 1; at least one of R.sub.4, R.sub.5 and R.sub.6 is --CH.sub.2 --C(R).dbd.CH.sub.2, --CH.sub.2).sub.m COOC(R).dbd.CH.sub.2, --CH.sub.2).sub.m COOCH.sub.2 OC(R).dbd.CH.sub.2,--CH.sub.2).sub.m O--C(R).dbd.CH.sub.2,--CH.sub.2).sub.m O--CH.sub.2 --C(R).dbd.CH.sub.2, --CH.sub.2).sub.m CONH-C(R).dbd.CH.sub.2 or ##STR3## wherein R is hydrogen or methyl, m is a number from 1 to 3 and n is 0 or 1; the remaining R.sub.4, R.sub.5 and R.sub.
    Type: Grant
    Filed: November 12, 1976
    Date of Patent: August 15, 1978
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Toru Seita, Shunichi Asami, Akihiko Shimizu
  • Patent number: 4083822
    Abstract: A polymer emulsion is produced by reacting a vinyl monomer having an active halogen with a higher amine in a monomer having ethylenically unsaturated double bond and then conducting a free radical polymerization with the addition of water.
    Type: Grant
    Filed: May 28, 1976
    Date of Patent: April 11, 1978
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Akihiko Shimizu, Takao Hayashi
  • Patent number: 4081419
    Abstract: A polymer emulsion is produced by the free radical polymerization of a monomer having an ethylenic unsaturated double bond in the presence of 0.1 to 10 wt parts of a compound having the formula ##STR1## wherein R.sub.1 represents hydrogen atom or methyl group; R.sub.2 represents hydrogen atom, methyl or ethyl group; R.sub.3 represents an alkyl group having 6 to 22 carbon atoms; n is 1, 2, or 3; and X represents a halogen atom, per 100 wt parts of the monomer.
    Type: Grant
    Filed: May 28, 1976
    Date of Patent: March 28, 1978
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Akihiko Shimizu, Takao Hayashi
  • Patent number: 4076927
    Abstract: A sulfur modified polychloroprene is produced in a process which comprises polymerizing chloroprene or a mixture of chloroprene and a comonomer in a neutral or acidic aqueous emulsion by using a cationic emulsifier in the presence of sulfur and a peroxide initiator, and then performing a peptization of the resulting sulfur modified polychloroprene latex by addition thereto of an alkaline aqueous solution in amounts sufficient to reduce the pH of the latex to alkaline conditions.
    Type: Grant
    Filed: August 5, 1975
    Date of Patent: February 28, 1978
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Akihiko Shimizu, Atsushi Kita
  • Patent number: 4066827
    Abstract: A polyion complex is produced by reacting a weak acid type or a strong acid type polyanion polymer with a nucleic acid base-containing polycation polymer.
    Type: Grant
    Filed: May 17, 1976
    Date of Patent: January 3, 1978
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Toru Seita, Akihiko Shimizu, Yujiro Kosaka
  • Patent number: 4065414
    Abstract: A crosslinkable polyion complex is prepared by reacting a polycation polymer having an ethylenic double bond at a terminal position in the repeating unit of the polymer with a polyanion polymer. A polyion complex film is prepared by dissolving the crosslinkable polyion complex in a solvent mixture of water-organic solvent-acid, base or salt and then forming a film by casting or coating the solution on a substrate.
    Type: Grant
    Filed: August 6, 1976
    Date of Patent: December 27, 1977
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Toru Seita, Akihiko Shimizu
  • Patent number: 4056666
    Abstract: A polyion complex prepared by reacting an alkali metal silicate with a nucleic acid base-containing polycation polymer having the unit formula: ##STR1## wherein X represents adenine, thymine, cytosine, uracil or a derivative thereof, in which the purine nucleus is bonded at 9-position and the pyrimidine nucleus is bonded at 1-position;M represents a vinyl monomer;x is 0 or a positive integer;B represents a halogen atom or hydroxyl group; y is 0 or 1;R represents a hydrogen atom or a C.sub.1-4 alkyl group;R.sub.1 and R.sub.2 respectively represents a C.sub.1-10 hydrocarbon group and n is an integer greater than 10.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: November 1, 1977
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Toru Seita, Akihiko Shimizu, Yujiro Kosaka
  • Patent number: 4054547
    Abstract: A latex of chloroprene polymer is produced without using an emulsifier, which comprises polymerizing chloroprene by free radical polymerization, in an aqueous medium in the presence of 0.2 - 10 wt.% of styrene sulfonic acid or a derivative thereof, based on the total monomers added to the system. In a preferred embodiment the quantity of chloroprene added is 0.5 to 50% wt.
    Type: Grant
    Filed: November 6, 1975
    Date of Patent: October 18, 1977
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Akihiko Shimizu, Takao Hayashi
  • Patent number: 4035558
    Abstract: An organic-inorganic polyion complex is prepared by reacting a polycation polymer with an alkali silicate in the presence of a solvent.
    Type: Grant
    Filed: August 12, 1976
    Date of Patent: July 12, 1977
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Toru Seita, Akihiko Shimizu
  • Patent number: 4031302
    Abstract: Granular rubber is prepared by allowing a latex mixture of a rubber latex and an aqueous solution of a high molecular weight polyanion containing carboxylate groups and/or hydroxyl groups to fall freely into an aqueous solution of an alkaline earth metal salt and separating the granular rubber which forms.
    Type: Grant
    Filed: September 25, 1975
    Date of Patent: June 21, 1977
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Akihiko Shimizu, Yasuhiro Sakanaka
  • Patent number: 4016216
    Abstract: Polymerization of 2,3-dichloro-1,3-butadiene is inhibited by adding an aniline compound having an N-nitroso group which can be easily removed with an alkaline aqueous solution to the 2,3-dichloro-1,3-butadiene.
    Type: Grant
    Filed: July 31, 1975
    Date of Patent: April 5, 1977
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Akihiko Shimizu, Takao Hayashi
  • Patent number: 4013580
    Abstract: The formation of popcorn chloroprene polymer is prevented by adding an N-nitroso aniline compound of the formula ##STR1## wherein Ar is a phenyl group; R represents a C.sub.1.sub.-8 alkyl or a carboxymethyl group and when R is a C.sub.1.sub.-8 alkyl group, X is a hydroxyl group and n is 1 or 2; and when R is a carboxymethyl group, X is a halogen or hydroxyl group and n is 0, 1 or 2.
    Type: Grant
    Filed: May 21, 1975
    Date of Patent: March 22, 1977
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Takao Hayashi, Akihiko Shimizu
  • Patent number: 3969334
    Abstract: This invention relates to a novel process of preparing chloroprene polymer rubber granules. The process comprises adding 4 to 10 wt. parts of sodium silicate to 100 wt. parts of a cationic latex of chloroprene polymer and then adding an alkaline earth metal salt or an acid to precipitate granules of the chloroprene polymer rubber.
    Type: Grant
    Filed: October 15, 1975
    Date of Patent: July 13, 1976
    Assignee: Toyo Soda Manufacturing Co., Ltd.
    Inventors: Akihiko Shimizu, Yasuhiro Sakanaka
  • Patent number: 3962069
    Abstract: A system for formation treatment of sludge in which an endless belt screen forms an electrode which extends over a portion of its path into the fluid sludge and is juxtaposed with another electrode therein so that the applicaton of an electrical potential across the electrodes results in the formaton of a consolidated and partly dewatered sludge deposit upon the screen electrode. The latter then carries the deposit to a drying chamber and preferably thereafter to an incinerator chamber in which the sludge deposit is incinerated alternatively, the dry sludge layer can be removed.
    Type: Grant
    Filed: September 23, 1974
    Date of Patent: June 8, 1976
    Assignee: Inoue-Japan Research Inc.
    Inventors: Kiyoshi Inoue, Akihiko Shimizu