Patents by Inventor Yuji Yoneyama

Yuji Yoneyama 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).

  • Detergent composition having low skin irritability
    Patent number: 5681803
    Abstract: There is disclosed a detergent composition containing, as an essential ingredient, at least one member selected from three types of .alpha.-sulfo-fatty acid derivatives as represented by following formulas (1), (2) and (3): ##STR1## where R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each an alkyl group or an alkenyl group, each having from 6 to 24 carbon atoms;R.sub.5 is an alkyl group having from 1 to 4 carbon atoms;M.sub.1, M.sub.2, M.sub.3 and M.sub.4 are each a hydrogen atom or a cation capable of forming a salt;AO is an oxyalkylene group or a polyvalent alcohol residue; andp, m and n are each a positive number.The detergent compositions are very low in irritability to the body and have a low critical micelle concentration and a low Krafft point. Further, they are highly soluble in water and they can be used in the form of powder or liquid.
    Type: Grant
    Filed: November 22, 1994
    Date of Patent: October 28, 1997
    Assignee: Lion Corporation
    Inventors: Tomomichi Okano, Masahiro Fukuda, Junko Tanabe, Masato Ono, Yasuhiro Akabane, Hisao Takahashi, Naoyuki Egawa, Takenobu Sakatani, Hirofumi Kanao, Yuji Yoneyama
  • Stabilizing sodium parcabonate by separately spraying coating solutions of boric acid and a silicate
    Patent number: 5312557
    Abstract: A bleaching detergent composition is disclosed which contains granulated sodium percarbonate incorporated therein formed by separately spraying an aqueous boric acid solution and an aqueous alkali metal silicate solution onto sodium percarbonate particles kept in a fluidized state to coat the sodium percarbonate particles with an aqueous solution of the boric acid and the alkali metal silicate.
    Type: Grant
    Filed: April 6, 1993
    Date of Patent: May 17, 1994
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Masayoshi Onda, Akira Ito, Yasuo Hiro, Kenji Umehara, Yuji Yoneyama
  • Bleaching detergent composition
    Patent number: 5219549
    Abstract: A bleaching detergent composition is disclosed which contains granulated sodium percarbonate incorporated therein formed by separately spraying an aqueous boric acid solution and an aqueous alkali metal silicate solution onto sodium percarbonate particles kept in a fluidized state to coat the sodium percarbonate particles with an aqueous solution of the boric acid and the alkali metal silicate.
    Type: Grant
    Filed: May 6, 1991
    Date of Patent: June 15, 1993
    Assignees: Mitsubishi Gas Chemical Company, Inc., Lion Corporation
    Inventors: Masayoshi Onda, Akira Ito, Yasuo Hiro, Kenji Umehara, Yuji Yoneyama