Patents by Inventor Yoshifumi Tanihara

Yoshifumi Tanihara 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).

  • Bisphosphite compound and method for producing aldehydes
    Patent number: 5728861
    Abstract: A bisphosphite compound of the following formula (I): ##STR1## wherein W is a substituted or unsubstituted arylene group, L is a substituted or unsubstituted alkylene or alkenylene group, X is an oxygen atom, and each of R.sup.1 to R.sup.4 which are the same or different, is a substituted or unsubstituted alkyl, aryl, alkylaryl, arylalkyl or alicyclic group, or R.sup.1 and R.sup.2, and/or R.sup.3 and R.sup.4, bond to each other to form a ring.
    Type: Grant
    Filed: March 12, 1997
    Date of Patent: March 17, 1998
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Keiichi Sato, Eitaro Takahashi, Yoshifumi Tanihara, Yasuhiro Wada
  • Bisphosphite compound and method for producing aldehydes
    Patent number: 5663403
    Abstract: A bisphosphite compound of the following formula (I): ##STR1## wherein W is a substituted or unsubstituted arylene group, L is a substituted or unsubstituted alkylene or alkenylene group, X is an oxygen atom, and each of R.sup.1 to R.sup.4 which are the same or different, is a substituted or unsubstituted alkyl, aryl, alkylaryl, arylalkyl or alicyclic group, or R.sup.1 and R.sup.2, and/or R.sup.3 and R.sup.4, bond to each other to form a ring.
    Type: Grant
    Filed: January 18, 1996
    Date of Patent: September 2, 1997
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Keiichi Sato, Eitaro Takahashi, Yoshifumi Tanihara, Yasuhiro Wada