Patent US3030290A successfully refreshed from Google Patents.
US3030290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making the surfaces of fluorocarbon polymers cementable
Assignee: EIDP Inc
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Filing: 1958-08-07
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Granted: 1962-04-17
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Expires: 1978-08-07
Abstract
No abstract record available.
Inventors
- 👤 Jr Dennis Leo Ryan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:00
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/12; C08J7/123; C08J2327/00; C08J2327/02; C08J2327/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS FOR MAKING A SHAPED ARTICLE OF A PERFLUOROCARBON RESIN CEMENTABLE WHICH COMPRISES SUBJECTING A SURFACE OF SAID ARTICLE TO THE ACTION OF A CORONA DISCHARGE EMPLOYING A VOLTAGE OF AT LEAST 500 VOLTS FOR A TIME SUFFICIENT TO PROVIDE AT LEAST 0.3 VOLT-HOURS EXPOSURE PER MIL OF THICKNESS OF SAID ARTICLE AT AN ABSOLUTE PRESSURE OF 0.01 MM. OF MERCURY AND AT LEAST 300 VOLT-HOURS EXPOSURE PER MIL OF THICKNESS OF SAID ARTICLE AT ATMOSPHERIC PRESSURE.
Claim 2
Dependent Claim
78 words
A PROCESS FOR MAKING A SHAPED ARTICLE OF A PERFLUOROCARBON RESIN CEMENTABLE WHICH COMPRISES SUBJECTING A SURFACE OF SAID ARTICLE TO THE ACTION OF A CORONA DISCHARGE EMPLOYING A VOLTAGE OF AT LEAST 500 VOLTS FOR A TIME SUFFICIENT TO PROVIDE AT LEAST 0.3 VOLT-HOURS EXPOSURE PER MIL OF THICKNESS OF SAID ARTICLE AT AN ABSOLUTE PRESSURE OF 0.01 MM. OF MERCURY AND AT LEAST 300 VOLT-HOURS EXPOSURE PER MIL OF THICKNESS OF SAID ARTICLE AT ATMOSPHERIC PRESSURE.
References Cited (Backward Citations)
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US2810933A
Cited
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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) | 1965-04-16 | 1965-10-16 | 1966-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-16 | 1969-10-16 | 1970-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-16 | 1973-10-16 | 1974-04-17 | $7700.00 | Window Closed / Lapsed |