US3071486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for marking polytetrafluoroethylene
Assignee: Individual
•
Filing: 1959-07-24
•
Granted: 1963-01-01
•
Expires: 1979-07-24
Abstract
No abstract record available.
Inventors
- 👤 Lewis A Kingsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:54
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/58; Y; Y10; Y10S; Y10S118/00; Y10S118/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A METHOD FOR MARKING POLYTETRAFLUOROETHYLENE COMPRISING FIRST MAKING AN IMPRESSION IN A POLYTETRAFLUOROWTHYLENE SURFACE, DEPOSITING A MIXTURE OF POLYTETREFLUOROETHYLENE PARTICLES AND COLORING INGREDIENT IN SAID IMPRESSION, AND SUBSEQUENTLY HEATING SAID SURFACE TO ITS VAPORIZATION POINT FOR A PERIOD OF TIME SUFFICIENT ONLY TO HEAT-SET AND FUSE MIXTURE TO SAID POLYETRAFLUOROETHYLENE IN SAID IMPRESSION.
Claim 2
Independent Claim
53 words
A METHOD FOR MARKING POLYTETRAFLUOROETHYLENE COMPRISING FIRST MAKING AN IMPRESSION IN A POLYTETRAFLUOROWTHYLENE SURFACE, DEPOSITING A MIXTURE OF POLYTETREFLUOROETHYLENE PARTICLES AND COLORING INGREDIENT IN SAID IMPRESSION, AND SUBSEQUENTLY HEATING SAID SURFACE TO ITS VAPORIZATION POINT FOR A PERIOD OF TIME SUFFICIENT ONLY TO HEAT-SET AND FUSE MIXTURE TO SAID POLYETRAFLUOROETHYLENE IN SAID IMPRESSION.
References Cited (Backward Citations)
US1899068A
Cited
US2059441A
Cited
US2517493A
Cited
US2581180A
Cited
US2618574A
Cited
US2866723A
Cited
US2728698A
Cited
US2911328A
Cited
US3018188A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |