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. 21, 1997
Filed:
Dec. 28, 1990
Applicant:
Inventors:
Steven D Possanza, Penfield, NY (US);
Daniel J Wooster, Ontario, NY (US);
David R Bendle, Hemel Hempstead, GB;
Assignee:
Eastman Kodak Company, Rochester, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03C / ; B01J / ; B01F / ;
U.S. Cl.
CPC ...
430642 ; 2523154 ; 252 / ; 62 69 ; 430935 ; 366103 ; 366107 ; 530354 ;
Abstract
Photographic emulsions are quickly chilled to a homogeneous, particulate gel by injection of carbon dioxide coolant, while the emulsion is agitated. This process is carried out in a housing having a pair of parallel auger screws to transport emulsion circuitously within the housing. Carbon dioxide coolant is injected through a plurality of nozzles in the housing and is then removed from the housing through a vent line.