Patent US2866731A successfully refreshed from Google Patents.
US2866731A
Expired / Lapsed
US
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Process of coating butyl rubber with neoprene
Assignee: EIDP Inc
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Filing: 1955-01-27
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Granted: 1958-12-30
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Expires: 1975-01-27
Abstract
No abstract record available.
Inventors
- 👤 James E Van Epp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:17
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31826; Y10T428/31833; Y10T428/31837; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917; Y10T428/31924; Y10T428/31928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
PROCESS OF PREPARING AN UNSUPPORTED CURED FILM OF BUTYL RUBBER CHARACTERIZED BY ITS ABILITY TO BE STRONGLY BONDED TO OTHER SURFACES WHICH COMPRISES FORMING A COMPOUND COMPRISING UNCURED BUTYL RUBBER AS AN ESSENTIAL INGREDIENT AND CURATIVES TO CURE SAID BUTYL RUBBER, SHAPING ACID COMPOUND INTO A BASE FILM, APPLYING AS A SURFACE LAYER TO AT LEAST ONE SIDE OF SAID BASE FILM
Claim 2
Dependent Claim
62 words
PROCESS OF PREPARING AN UNSUPPORTED CURED FILM OF BUTYL RUBBER CHARACTERIZED BY ITS ABILITY TO BE STRONGLY BONDED TO OTHER SURFACES WHICH COMPRISES FORMING A COMPOUND COMPRISING UNCURED BUTYL RUBBER AS AN ESSENTIAL INGREDIENT AND CURATIVES TO CURE SAID BUTYL RUBBER, SHAPING ACID COMPOUND INTO A BASE FILM, APPLYING AS A SURFACE LAYER TO AT LEAST ONE SIDE OF SAID BASE FILM
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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) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |