US3304221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polytetrafluoroethylene laminates and method of making the same
Assignee: Dixon Corp
•
Filing: 1963-04-18
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Granted: 1967-02-14
•
Expires: 1983-04-18
Abstract
No abstract record available.
Inventors
- 👤 Eggleton Earl Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:55
CPC Classifications
B; B32; B32B; B32B27/00; C; C09; C09D; C09D127/00; C09D127/02; C09D127/12; C09D127/18; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/254; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31652; Y10T428/31667; Y10T428/31678; Y10T428/31692; Y10T428/31699; Y10T428/31725; Y10T428/3175
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A LAMINATE COMPRISING A SUBSTRATE, A CONTINUOUS FILM OF POLYTETRAFLUOROETHYLENE, AND A DISCONTINUOUS LAYER OF POLYTETRAFLUOROETHYLENE PARTICLES INTERMEDIATE SAID SUBSTRATE AND SAID CONTINUOUS FILM, SAID PARTICLES HAVING AN AVERAGE DIAMETER OF AT LEAST ABOUT 75 MICRONS.
Claim 2
Dependent Claim
36 words
A LAMINATE COMPRISING A SUBSTRATE, A CONTINUOUS FILM OF POLYTETRAFLUOROETHYLENE, AND A DISCONTINUOUS LAYER OF POLYTETRAFLUOROETHYLENE PARTICLES INTERMEDIATE SAID SUBSTRATE AND SAID CONTINUOUS FILM, SAID PARTICLES HAVING AN AVERAGE DIAMETER OF AT LEAST ABOUT 75 MICRONS.
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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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |