US2983624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass fabric gasket and diaphragm material coated with a cured elastomeric copolymerof vinylidene fluoride and hexafluoropropene and method of making same
Assignee: EIDP Inc
•
Filing: 1956-07-16
•
Granted: 1961-05-09
•
Expires: 1976-07-16
Abstract
No abstract record available.
Inventors
- 👤 Jr Kenneth E Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:46
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/10; F16J15/104; C; C03; C03C; C03C25/00; C03C25/10; C03C25/1095; D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/244; D06M15/256; D06N; D06N3/00; D06N3/04; D06N3/047; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31645; Y10T428/31649; Y10T428/31652; Y10T442/00; Y10T442/20; Y10T442/2549; Y10T442/2574
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A GASKET AND DIAPHRAGM MATERIAL RESISTANT TO ATTACK BY FUMING NITRIC ACID, CONCENTRATED SULFURIC ACID AND 10% AQUEOUS SOLUTION OF SODIUM HYDROXIDE COMPRISING A SUBSTRATE OF GLASS FABRIC COATED ON BOTH SIDES WITH A CURED ELASTOMERIC COPOLYMER OF 30-70% VINYLIDENE FLUORIDE AND 70-30% HEXAFLUOROPROPENE, SAID PERCENTAGES BEING ON A WEIGHT BASIS.
Claim 2
Dependent Claim
51 words
A GASKET AND DIAPHRAGM MATERIAL RESISTANT TO ATTACK BY FUMING NITRIC ACID, CONCENTRATED SULFURIC ACID AND 10% AQUEOUS SOLUTION OF SODIUM HYDROXIDE COMPRISING A SUBSTRATE OF GLASS FABRIC COATED ON BOTH SIDES WITH A CURED ELASTOMERIC COPOLYMER OF 30-70% VINYLIDENE FLUORIDE AND 70-30% HEXAFLUOROPROPENE, SAID PERCENTAGES BEING ON A WEIGHT BASIS.
References Cited (Backward Citations)
CA467677A
Cited
US2186917A
Cited
US2549935A
Cited
US2782174A
Cited
US2770606A
Cited
US2768925A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-05-08 | 1964-11-07 | 1965-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-05-08 | 1968-11-07 | 1969-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-05-08 | 1972-11-07 | 1973-05-09 | $7700.00 | Window Closed / Lapsed |