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Apparatus for removing silver from spent photoprocessing solution    
United States Patent5688401   
Link to this pagehttp://www.wikipatents.com/5688401.html
Inventor(s)Bober; Thomas W. (Rochester, NY); Pearl; Terry W. (Waterloo, NY); Vacco; Dominick (Rochester, NY); Yeaw; David C. (Brockport, NY)
AbstractSpent solutions from photographic processors are fed into a conduit (18) to which subsequently are added precipitating agents from a first source (22) and flocculating agents from a second source (28); so that, well grown or ripened clumps of flocculated solids are formed along the conduit before being emptied into a gravity collecting vessel and shipping container (38) from which clarified liquids are displaced by a mass (50) of accumulated flocculated solids, typically through a filter (58, 142, 150, 158, 162, 166, 220) for removal of any unsettled fines. Many of the clumps of flocculated solids become enlarged enough to individually extend across and substantially fill a cross-sectional area of the conduit. As a result, the enlarged clumps substantially block passage of and strain from the solution remaining fine particles which then adhere to the clumps.
   














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Drawing from US Patent 5688401
Apparatus for removing silver from spent photoprocessing solution - US Patent 5688401 Drawing
Apparatus for removing silver from spent photoprocessing solution
Inventor     Bober; Thomas W. (Rochester, NY); Pearl; Terry W. (Waterloo, NY); Vacco; Dominick (Rochester, NY); Yeaw; David C. (Brockport, NY)
Owner/Assignee     Eastman Kodak Company (Rochester, NY)
Patent assignment
All assignments
Publication Date     November 18, 1997
Application Number     08/648,477
PAIR File History     Application Data   Transaction History
Image File Wrapper   Patent Term   Fees
Litigation
Filing Date     May 16, 1996
US Classification     210/199 210/202 210/206 210/207 210/244 210/257.1 210/262 210/299 210/313 210/444 210/493.5 266/170
Int'l Classification     C02F 001/54 262
Examiner     Hruskoci; Peter A.
Assistant Examiner    
Attorney/Law Firm     Snee, III; Charles E.
Address
Parent Case     CROSS REFERENCE TO RELATED APPLICATION This application is a continuation-in-part of Ser. No. 08/206,355 filed Mar. 4, 1994 now U.S. Pat. No. 5,549,820.
Priority Data    
USPTO Field of Search     210/199 210/202 210/205 210/206 210/207 210/208 210/295 210/299 210/206 210/207 210/208 210/319 210/244 210/320 210/493.1 210/493.5 210/443 210/444 210/257.1 266/170
Patent Tags     removing silver spent photoprocessing solution
   
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Market Size
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$2B - $5B
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Market Share
Estimate the percentage of the relevant market sector this invention will capture:
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25% - 49.99%
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50% - 74.99%