Patent US2955973A successfully refreshed from Google Patents.
US2955973A
Expired / Lapsed
US
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Perfluorochloroolefin polymers to base materials
Assignee: 3M Co
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Filing: 1955-09-20
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Granted: 1960-10-11
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Expires: 1975-09-20
Abstract
No abstract record available.
Inventors
- 👤 Richard A Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:09
CPC Classifications
B; B32; B32B; B32B27/00; B29; B29C; B29C70/00; B29C70/003; B29K; B29K2309/00; B29K2309/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
THE METHOD FOR PROVIDING A PROTECTIVE SURFACE OF A TRIFLUOROCHLORETHYLENE POLYMER ON A RELATIVELY CLOSE TEXTILE FABRIC WHICH COMPRISES DISTRUBITING PARTICLES OF SAID POLYMER OVER THE UPPER SURFACE OF SAID TEXTILE FABRIC TO FORM A SURFACE LAYER, SAID POLYMER PARTICLES BEING OF A SIZE SUCH THAT SOME OF SAID PARTICLES PENETRATE INTO THE INTERSICES OF SAID TEXTILE FABRIC AND THEREAFTER SUBJECTING THE POLYMER PARTICLES UNDER PRESSURE OF BETWEEN ABOUT 40 AND ABOUT 2500 POUNDS PER SQUARE INCH GAUGE TO A TEMPEARATURE BETWEEN ABOUT 230*C. AND ABOUT 300*
Claim 2
Independent Claim
87 words
THE METHOD FOR PROVIDING A PROTECTIVE SURFACE OF A TRIFLUOROCHLORETHYLENE POLYMER ON A RELATIVELY CLOSE TEXTILE FABRIC WHICH COMPRISES DISTRUBITING PARTICLES OF SAID POLYMER OVER THE UPPER SURFACE OF SAID TEXTILE FABRIC TO FORM A SURFACE LAYER, SAID POLYMER PARTICLES BEING OF A SIZE SUCH THAT SOME OF SAID PARTICLES PENETRATE INTO THE INTERSICES OF SAID TEXTILE FABRIC AND THEREAFTER SUBJECTING THE POLYMER PARTICLES UNDER PRESSURE OF BETWEEN ABOUT 40 AND ABOUT 2500 POUNDS PER SQUARE INCH GAUGE TO A TEMPEARATURE BETWEEN ABOUT 230*C. AND ABOUT 300*
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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) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |