Patents by Inventor Teruo Watarai

Teruo Watarai 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).

  • Luminescent tool, its auxiliary member and method of preserving bioluminescent composition used in the tool and the auxiliary member
    Patent number: 6521304
    Abstract: The present invention relates to luminescent playthings such as candles, table lights, pen lights, illumination, illuminating playthings for camp, illuminating playthings for night fishing, fish-gathering lamps, safety candles, neon lights, luminescent inks, luminescent pens, luminescent coatings or luminescent writing implements, in which a soft light of an indescribable tone of color not obtainable from flames of conventional candles is emitted via seawater, lake and marsh water, river water, ground water, tap water or mineral drinking water by utilizing 3 components of luciferin, luciferase and ATP or 4 components of these components plus a metal salt, out of components necessary for bioluminescence in fireflies.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: February 18, 2003
    Assignee: Kikkoman Corporation
    Inventors: Naoki Kajiyama, Ayumi Arai, Eiichi Nakano, Hiroki Tatsumi, Teruo Watarai, Naoki Eisaki, Tatsuya Sakakibara, Masaru Suzuki
  • ATP eliminator and the process for determining biological cells
    Patent number: 6200767
    Abstract: The present invention provides a process for eliminating effectively ATP in a sample, using adenosine phosphate deaminase alone or in combination with at least one enzyme from the group consisting of apyrase, alkaline phosphatase, acid phosphatase, hexokinase and adenosine triphosphatase, a process for determining biological cells contained in foods and beverages in convenient and precise manner in combination with bioluminescence method, and a reagent for the determination thereof.
    Type: Grant
    Filed: January 5, 1999
    Date of Patent: March 13, 2001
    Assignee: Kikkoman Corporation
    Inventors: Tatsuya Sakakibara, Seiji Murakami, Noriaki Hattori, Keiko Yajitate, Teruo Watarai, Motoo Nakajima, Kazuhiro Imai
  • ATP eliminator and the process for determining biological cells
    Patent number: 5891702
    Abstract: The present invention provides a process for eliminating effectively ATP in a sample, using adenosine phosphate deaminase alone or in combination with at least one enzyme selected from the group consisting of apyrase, alkaline phosphatase, acid phosphatase, hexokinase and adenosine triphosphatase, a process for determining biological cells contained in foods and beverages in convenient and precise manner in combination with bioluminescence method, and a reagent for the determination thereof.
    Type: Grant
    Filed: December 26, 1996
    Date of Patent: April 6, 1999
    Assignee: Kikkoman Corporation
    Inventors: Tatsuya Sakakibara, Seiji Murakami, Noriaki Hattori, Keiko Yajitate, Teruo Watarai, Motoo Nakajima, Kazuhiro Imai
  • DNA fragment containing a tannase gene, a recombinant plasmid, a process for producing tannase, and a promoter
    Patent number: 5665584
    Abstract: The present invention relates to a DNA fragment of 3,563 base pairs containing a gene coding for tannase and derived from a microorganism belonging to the genus Aspergillus, with the following restriction enzyme map: ##STR1## B: Bam HI, H: Hind III, K: Kpn I, S: Sal I, X: Xba I; a DNA fragment containing a tannase gene coding for the amino acid sequence of (SEQ ID NO:4); a recombinant plasmid comprising the DNA fragment containing the tannase gene inserted into a plasmid vector; a process for producing tannase, comprising culturing a microorganism belonging to the genus Aspergillus capable of producing tannase in medium with the recombinant plasmid, and recovering tannase from the culture; and a promoter represented by the nucleotide sequence of (SEQ ID NO:1). Tannase can be efficiently produced according to the present invention.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: September 9, 1997
    Assignees: Noda Institutute For Scientific Research, Kikkoman Corporation
    Inventors: Osamu Hatamoto, Teruo Watarai, Kiyoshi Mizusawa, Eiichi Nakano