Patents by Inventor Shuichi Aiba

Shuichi Aiba 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).

  • Autonomously replicating plasmid and saccharomycopsis lipolytica transformed therewith
    Patent number: 5118625
    Abstract: The plasmid of the present invention contains Leu 2 gene (.beta.-isopropylmaleate dehydrogenase gene) from Saccharomycopsis lipolytica and an autonomously replicating sequence (hereafter referred to as ARS) and can be a shuttle vector between Escherichia coli and Saccharomycopsis lipolytica since it is produced from shuttle vector pVC 1 of Escherichia coli and Saccharomyces cerevisiae. An exogenous useful gene is inserted into the plasmid of the present invention, namely, shuttle vector to transform Escherichia coli, whereby a large quantity of plasmids are obtained. It becomes possible to produce a useful substance in Saccharomycopsis lipolytica as a host using the plasmid.
    Type: Grant
    Filed: December 16, 1988
    Date of Patent: June 2, 1992
    Assignees: Oriental Yeast Co., Ltd., Nisshin Flour Milling Co., Ltd.
    Inventors: Shuichi Aiba, Tomohisa Nagasaki, Kohji Uchida
  • Transforming Bacillus stearothermophilus with plasmid vector pTB 19
    Patent number: 4695546
    Abstract: A process for transformation of a microorganism by introduction of a plasmid therein, the microorganism being thermophilic and gram-positive or gram-variable, and vector plasmids used therefor.
    Type: Grant
    Filed: March 8, 1982
    Date of Patent: September 22, 1987
    Assignee: Shionogi & Co., Ltd.
    Inventors: Shuichi Aiba, Tadayuki Imanaka
  • Plasmid pOA15
    Patent number: 4615980
    Abstract: A plasmid pOA15 in isolated form having the property of conferring pock-forming ability on Streptomyces griseus (ATCC 10137) and a molecular length of about 10 kb, and showing such sensitivity that(a) it has one restriction site recognized by BamHI,(b) it has one restriction site recognized by EcoRI,(c) it has 7 restriction sites recognized by SalI, and(d) it is not cleaved by BglII, HindIII, KpnI, PstI and XbaI,and a biologically pure culture of a microorganism containing the above plasmid.
    Type: Grant
    Filed: February 1, 1984
    Date of Patent: October 7, 1986
    Assignee: Sanraku-Ocean Co., Ltd.
    Inventors: Shuichi Aiba, Tetsuo Ohnuki