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:
Oct. 12, 1976
Filed:
Jan. 22, 1974
Applicant:
Inventors:
Carl A Ackermann, Deep River, CT (US);
Patrick F McPherson, Deep River, CT (US);
Assignee:
Blu-Ray, Incorporated, Essex, CT (US);
Primary Examiner:
Int. Cl.
CPC ...
G03D / ;
U.S. Cl.
CPC ...
354299 ; 354300 ; 354324 ;
Abstract
In a diazo developer apparatus which includes a chamber, slightly larger than the film to be developed, having continuously circulating ammonia gas uniformly distributed in the film area, ammonia gas entry and exit ports, a temperature control device for the chamber, and elements in the chamber for preventing the film being processed from closing the exit port. The gas is derived from a container holding a predetermined amount of liquid ammonium hydroxide through which the gas exiting from the chamber is bubbled. The gas is derived from the container above the liquid level and fed directly to the chamber.