The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 18, 2005
Filed:
Oct. 28, 1997
Applicants:
Paul Gene Clemmer, Williamsville, NY (US);
Addison Miles Smith, Amherst, NY (US);
Hsueh Sung Tung, Getzville, NY (US);
John Stephen Bass, East Amherst, NY (US);
Inventors:
Paul Gene Clemmer, Williamsville, NY (US);
Addison Miles Smith, Amherst, NY (US);
Hsueh Sung Tung, Getzville, NY (US);
John Stephen Bass, East Amherst, NY (US);
Assignee:
Allied Signal Inc., Morristown, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 1908 ; C07C 1738 ; C07C 1700 ; C07C 17158 ; C07C 1720 ;
U.S. Cl.
CPC ...
Abstract
The present invention provides a vapor phase process for the production of difluoromethane, HFC-32. The process of this invention provides for the preparation of HFC-32 by a process that exhibits both good product yield and selectivity.