Patents by Inventor Daini Saika

Daini Saika 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: 4248801
    Abstract: Tertiary monomethylamines having long chain alkyl groups are advantageously prepared from unsaturated aliphatic nitriles under a low pressure at a high yield by the steps of:(a) reducing the nitriles with hydrogen in the presence of a nickel hydrogenation catalyst at 200.degree. through 230.degree. C. and under a hydrogen pressure of 0 through 10 kg/cm.sup.2 G, while the formed ammonia is removed;(b) reacting the resultant amines with a hydroxymethylation agent in the presence of the nickel catalyst at 150.degree. through 180.degree. C., while hydrogen is passed through the reaction zone under 0.3 through 7 kg/cm.sup.2 G and the formed water is removed, and;(c) reducing the resultant tertiary amines with hydrogen in the presence of the nickel catalyst at 175.degree. through 210.degree. C. and under a hydrogen pressure of 5 through 10 kg/cm.sup.2 G.
    Type: Grant
    Filed: July 3, 1979
    Date of Patent: February 3, 1981
    Assignee: The Lion Fat & Oil Co., Ltd.
    Inventors: Susumu Tomidokoro, Michito Sato, Daini Saika
  • Patent number: 4180468
    Abstract: Disubstituted aliphatic carboxylamidoamines of the general formula: ##STR1## wherein R stands for an aliphatic hydrocarbyl group with 7-17 carbon atoms and M for a hydrogen atom or an alkali metal atom. Detergents and toiletry compositions incorporated with the disubstituted aliphatic carboxylamidoamines are extremely low in irritating property to skin, eyes and mucous membranes.
    Type: Grant
    Filed: November 25, 1977
    Date of Patent: December 25, 1979
    Assignee: The Lion Fat & Oil Co., Ltd.
    Inventors: Susumu Tomidokoro, Toshiyuki Ukigai, Toshio Takahashi, Daini Saika
  • Patent number: 4064342
    Abstract: A method of manufacturing sulfated cellulose using any of the Lewis base-SO.sub.3 complexes as a sulfating agent, which characteristically consists in thermally activating cellulose prior to its sulfation in tertiary amines or a mixture of tertiary amines and amine hydrochlorides, thereby enabling alkali metal salts of cellulose sulfate to be favorably accepted as a binder for dentrifice compositions.
    Type: Grant
    Filed: July 24, 1975
    Date of Patent: December 20, 1977
    Assignee: Lion Fat and Oil Co., Ltd.
    Inventors: Daini Saika, Takuma Yanagawa, Masaaki Mizuta, Isamu Kadoya