Patent US3284248A successfully refreshed from Google Patents.
US3284248A
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Metal surface treatment
Assignee: Fort James Corp
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Filing: 1963-01-07
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Granted: 1966-11-08
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Expires: 1983-01-07
Abstract
No abstract record available.
Inventors
- 👤 George G Rumberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:32
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/18; B05D1/185; B05D5/00; B05D5/08; B29; B29C; B29C33/00; B29C33/56; B29C33/60; B82; B82Y; B82Y30/00; B82Y40/00; B05D2202/00; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/261; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
THE METHOD OF TREATING METAL SURFACES OF CASTING APPARATUS WHICH ADHERE TO NORMALLY SOLID MATERIALS WHICH HAVE UNDERGONE A CHANGE-OF-STATE IN CONTACT THEREWITH COMPRISING APPLYING A PERFLUOROCARBOXYLIC ACID TO SAID METAL SURFACE IN AN AMOUNT TO COVER SAID SURFACE WITH AT LEAST A CONTINUOUS MONO-MOLECULAR FILM OF THE PERFLUOROCARBOXYLIC ACID TO PROVIDE SAID METAL WITH A RELEASABLE SURFACE FOR THE NORMALLY SOLID MATERIAL AFTER A CHANGE-OF-STATE HAS OCCURED.
Claim 2
Independent Claim
68 words
THE METHOD OF TREATING METAL SURFACES OF CASTING APPARATUS WHICH ADHERE TO NORMALLY SOLID MATERIALS WHICH HAVE UNDERGONE A CHANGE-OF-STATE IN CONTACT THEREWITH COMPRISING APPLYING A PERFLUOROCARBOXYLIC ACID TO SAID METAL SURFACE IN AN AMOUNT TO COVER SAID SURFACE WITH AT LEAST A CONTINUOUS MONO-MOLECULAR FILM OF THE PERFLUOROCARBOXYLIC ACID TO PROVIDE SAID METAL WITH A RELEASABLE SURFACE FOR THE NORMALLY SOLID MATERIAL AFTER A CHANGE-OF-STATE HAS OCCURED.
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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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |