US2920960A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for treating webs
Assignee: Individual
•
Filing: 1952-08-16
•
Granted: 1960-01-12
•
Expires: 1972-08-16
Abstract
No abstract record available.
Inventors
- 👤 Walter J Bushell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:37
CPC Classifications
G; G03; G03D; G03D5/00; G03D5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
164 words
THE METHOD OF TREATING A WEB OF PHOTOGRAPHIC FILM WHICH INCLUDES: SUBJECTING ONE SURFACE OF SAID WEB WHILE DISPOSED IN A GASEOUS MEDUIM TO THE ACTION OF A SPRAY OF TREATING SOLUTION, THE MAJOR PORTION OF WHICH IS IMMEDIATELY REMOVED FROM SAID SURFACE, SAID SPRAY COMPLETELY COVERING THAT PORTION OF SAID WEB WHICH IS TO BE TREATED AND EFFECTING PARTIAL TREATMENT THEREOF, THEREAFTER SUBJECTING SAID SURFACE TO SAID WEB TO THE ACTION OF A JET OF GASEOUS MATERIAL THAT IS CHEMICALLY INERT WITH RESPECT TO SAID TREATING SOLUTION, SAID JET FORCING FROM SAID SURFACE THE REMAINDER OF SAID TREATING SOLUTION LEFT BY SAID SPRAY COLLECTING SAID TREATING SOLUTION PROJECTED FROM SAID FIRSTMENTIONED SPRAY AND PROJECTING IT ONTO SAID WEB IN THE SAME MANNER FROM A SECOND SPRAY, SUBJECTING SAID SURFACE OF SAID WEB TO THE ACTION OF A SECOND JET OF GASEOUS MATERIAL, AND SUBJECTING SAID SURFACE OF SAID WEB TO ALTERNATE SPRAY AND JET ACTION UNTIL THE TREATMENT OF SAID WEB IS COMPLETED.
Claim 2
Independent Claim
164 words
THE METHOD OF TREATING A WEB OF PHOTOGRAPHIC FILM WHICH INCLUDES: SUBJECTING ONE SURFACE OF SAID WEB WHILE DISPOSED IN A GASEOUS MEDUIM TO THE ACTION OF A SPRAY OF TREATING SOLUTION, THE MAJOR PORTION OF WHICH IS IMMEDIATELY REMOVED FROM SAID SURFACE, SAID SPRAY COMPLETELY COVERING THAT PORTION OF SAID WEB WHICH IS TO BE TREATED AND EFFECTING PARTIAL TREATMENT THEREOF, THEREAFTER SUBJECTING SAID SURFACE TO SAID WEB TO THE ACTION OF A JET OF GASEOUS MATERIAL THAT IS CHEMICALLY INERT WITH RESPECT TO SAID TREATING SOLUTION, SAID JET FORCING FROM SAID SURFACE THE REMAINDER OF SAID TREATING SOLUTION LEFT BY SAID SPRAY COLLECTING SAID TREATING SOLUTION PROJECTED FROM SAID FIRSTMENTIONED SPRAY AND PROJECTING IT ONTO SAID WEB IN THE SAME MANNER FROM A SECOND SPRAY, SUBJECTING SAID SURFACE OF SAID WEB TO THE ACTION OF A SECOND JET OF GASEOUS MATERIAL, AND SUBJECTING SAID SURFACE OF SAID WEB TO ALTERNATE SPRAY AND JET ACTION UNTIL THE TREATMENT OF SAID WEB IS COMPLETED.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-11 | 1963-07-13 | 1964-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-11 | 1967-07-13 | 1968-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-11 | 1971-07-13 | 1972-01-12 | $7700.00 | Window Closed / Lapsed |