Patents by Inventor Hiroaki Ohnuma

Hiroaki Ohnuma 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: 5510196
    Abstract: Zn--Cr alloy plated steel sheets have excellent corrosion resistance. It has now been found that the phase structures of Zn--Cr alloy platings are such that they comprise yet to be known phases .eta.x, .delta.x and .GAMMA.x. Furthermore, these phases when taken either singly or with two or more phases being mixed together, exhibit the following characteristics (1)-(6). The characteristics of the respective phases are also identified below.______________________________________ (1) .eta.x Resistance to cosmetic corrosion (2) .GAMMA.x Formability (3) .eta.x + .delta.x Chipping resistance (4) .eta.x + .GAMMA.x Corrosion resistance in the as-formed state (5) .delta.x + .GAMMA.x Water resistant secondary adherence of coating (6) .eta.x + .delta.x + .GAMMA.x Perforation corrosion resistance .eta.x: Hexagonal crystal a = 2.66-2.74 .ANG. c = 4.61-4.95 .ANG. .delta.x: Hexagonal crystal a = 2.72-2.78 .ANG. c = 4.43-4.60 .ANG. .GAMMA.x: Cubic crystal a = 3.00-3.06 .ANG.
    Type: Grant
    Filed: March 8, 1994
    Date of Patent: April 23, 1996
    Assignee: Kawasaki Steel Corporation
    Inventors: Hiroki Nakamaru, Tohru Fujimura, Hiroaki Ohnuma, Kazuo Mochizuki, Nobuyuki Morito, Michio Katayama
  • Patent number: 5104851
    Abstract: A 2-(alkyl-cyclohexyl)-1-propanol is disclosed. The compound is represented by formula (I): ##STR1## wherein R.sub.1 and R.sub.2 individually represent a group selected from the members consisting of methyl-, ethyl-, n-propyl-, i-propyl-, t-butyl-, and sec-butyl groups, provided that the total carbon atoms of the R.sub.1 and R.sub.2 groups are 4 to 7; either R.sub.1 and R.sub.2 is a hydrogen atom, the other being a cyclohexyl group; or R.sub.1 and R.sub.2 together form a hexamethylene ring together with 2 carbon atoms in the cyclohexane ring. The compound possesses a long-lasting, woody, floral odor, and can be widely used as perfumery materials such as perfumes, soaps, shampoos, aromatic goods, and detergents.
    Type: Grant
    Filed: January 25, 1991
    Date of Patent: April 14, 1992
    Assignee: Kao Corporation
    Inventors: Yoshiaki Fujikura, Hiroaki Ohnuma, Manabu Fujita, Nao Toi
  • Patent number: 4968667
    Abstract: A novel 1,1-dimethyl-3-hydroxymethylindane represented by formula (I) is disclosed. ##STR1## A perfumery composition comprising the same is also disclosed.The compound represented by formula (I) of the present invention possesses a lasting floral, fruity, herbal, and woody odor based on a rosy tone. The perfumery compositions comprising Compound (I) can widely be used as a perfurmery material for perfumes, soaps, shampoos, room flavors, detergents, and the like.
    Type: Grant
    Filed: October 13, 1989
    Date of Patent: November 6, 1990
    Assignee: Kao Corporation
    Inventors: Hiroaki Ohnuma, Yoshiaki Fujikura, Manabu Fujita, Nao Toi
  • Patent number: 4959349
    Abstract: Indane derivatives useful as fragrance-imparting components are disclosed. The represented indane derivatives by the formula (I), ##STR1## wherein ring A is a benzene or cyclohexane ring and R.sup.1 is a hydrogen atom, an alkyl group having 1-4 carbon atoms, or an alkanoyl group having 1-6 carbon atoms, provided that when ring A is benzene, R.sup.1 is a group other than hydrogen atom.
    Type: Grant
    Filed: February 23, 1990
    Date of Patent: September 25, 1990
    Assignee: KAO Corporation
    Inventors: Hiroaki Ohnuma, Yoshiaki Fujikura, Manabu Fujita, Nao Toi
  • Patent number: 4673024
    Abstract: A belt-converging type continuous casting apparatus for the continuous production of sheet bar-like cast sheet, wherein a casting space is defined by a combination of a pair of metal belts for supporting broad side planes of the cast sheet arranged opposite to each other with circulatedly moving, and a pair of tapered fixed-type side plates for supporting narrow-side planes of the cast sheet each disposed between the metal belts in intimate contact therewith, and is characterized in that the shape of the side plate is designed so as to satisfy the following relations:d=5-300 mm,D.gtoreq.60 mm,D/d.ltoreq.16,.theta..ltoreq.30.degree..theta.=tan.sup.-1 (D-d/Hto thereby prevent the occurrence of defects in the side planes of the cast sheet, while the metal belt is selected so as to satisfy the following relations:Sy.gtoreq.10,500 t/Dr,0.4.ltoreq.t.ltoreq.2.
    Type: Grant
    Filed: February 28, 1985
    Date of Patent: June 16, 1987
    Assignees: Kawasaki Steel Corporation, Hitachi Ltd
    Inventors: Hakaru Nakato, Tsutomu Nozaki, Katsuo Kinoshita, Yasuhiro Habu, Hiroaki Ohnuma, Shigeru Ohmiya, Tomoaki Kimura