Patents by Inventor John Alan Carlson

John Alan Carlson 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).

  • Production of enantiomerically enriched ortho-substituted .alpha.,.alpha.-diaromatic methanols
    Patent number: 5646330
    Abstract: A method of producing compounds of formula I ##STR1## wherein one of R.sub.1 and R.sub.2 is selected from --OH, --SH, and --NHR.sub.7 ; and the other of R.sub.1 and R.sub.2 is selected from H, --OH, --SH, --NHR.sub.7, and R.sub.8 ; R.sub.3 and R.sub.4 are each independently selected from R.sub.8 ; n and m are each independently 3; and each R.sub.5 and each R.sub.6 is independently selected from --OH, --SH, --NHR.sub.7, and R.sub.8 ; and R.sub.8 is as detailed in the specification;in enantiomerically enriched form, comprising reducing a compound of formula II ##STR2## wherein R.sub.1 -R.sub.6 are defined as in formula I, in the presence of B-haloisopinocampheylborane.
    Type: Grant
    Filed: February 17, 1995
    Date of Patent: July 8, 1997
    Assignee: Ciba-Geigy Corporation
    Inventors: Wen-Chung Shieh, William R. Cantrell, John Alan Carlson
  • Anti-inflammatory 3-(substituted-amino)-2,1-benzisothiazoles
    Patent number: 4112105
    Abstract: 3-(Substituted-amino)-2,1,-benzisothiazoles useful as anti-inflammatory agents are prepared by reductive cyclization of appropriately substituted 2-nitrothiobenzamides or by reaction of 3-chloro-2,1-benzisothiazoles with suitably substituted amines.
    Type: Grant
    Filed: May 4, 1977
    Date of Patent: September 5, 1978
    Assignee: Sterling Drug Inc.
    Inventors: John Alan Carlson, Malcolm Rice Bell