Patent US3304221A successfully refreshed from Google Patents.
US3304221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polytetrafluoroethylene laminates and method of making the same
Assignee: Dixon Corp
•
Filing: 1963-04-18
•
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 09:08
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.
References Cited (Backward Citations)
USRE24856E
Cited
US2567162A
Cited
US2484484A
Cited
US2562117A
Cited
US2798005A
Cited
US2728698A
Cited
US2777783A
Cited
US2944917A
Cited
US2984599A
Cited
US3056709A
Cited
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 |