US2964867A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imprinting of perfluorocarbon polymers
Assignee: Individual
•
Filing: 1957-12-18
•
Granted: 1960-12-20
•
Expires: 1977-12-18
Abstract
No abstract record available.
Inventors
- 👤 Lewis A Kingsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:51
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/06; B; B41; B41F; B41F19/00; B41F19/02; B41F19/06; B41M; B41M1/00; B41M1/26; B41M1/30; C08J7/048; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31678; Y10T428/31714; Y10T428/31786; Y10T428/31801; Y10T428/31804; Y10T428/31808; Y10T428/31812
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
26 words
AS AN ARTICLE OF MANUFACTURE, A CARRIER STRIP AND A LAYER OF AN ALKALI METAL CARRIED THEREON, SAID ALKALI MATERIAL BEING PROVIDED WITH A PROTECTIVE COATING.
Claim 2
Dependent Claim
26 words
AS AN ARTICLE OF MANUFACTURE, A CARRIER STRIP AND A LAYER OF AN ALKALI METAL CARRIED THEREON, SAID ALKALI MATERIAL BEING PROVIDED WITH A PROTECTIVE COATING.
Claim 3
Dependent Claim
48 words
A PROCESS FOR MARKING A FLUOROCARBON POLYMER SURFACE WHICH COMPRISES INTERPOSING THE ARTICLE OF CLAIM 1 BETWEEN SAID SURFACE AND A MARKING DIE, HEATING SAID DIE TO TEMPERATURE ABOVE THE MELTING POINT OF SAID ALKALI METAL, AND APPLYING PRESSURE TO SAID ARTICLE AND SAID SURFACE WITH SAID DIE.
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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) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |