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Patent US3279889A successfully refreshed from Google Patents.
US3279889A
Expired / Lapsed
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Protecting plastic liners against blistering
Assignee: Shell USA Inc
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Filing: 1964-12-03
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Granted: 1966-10-18
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Expires: 1984-12-03
Abstract
No abstract record available.
Inventors
- 👤 Rychly Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:57
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/002; B; B29; B29C; B29C63/00; B29C63/0017; B32; B32B; B32B15/00; B32B15/04; B32B15/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
APPARATUS COMPRISING: A CONDUIT ADAPTED TO CARRY ORGANIC FLUID; A PLASTIC FILM ADHESIVELY ENGAGED TO THE INNER WALL OF SAID CONDUIT, SAID PLASTIC FILM BEING OF A COMPOSITION THAT IS PERMEABLE TO THE ORGANIC FLUID CARRIED BY SAID CONDUIT AND HAVING A PLURALITY OF CLOSELY SPACED FINE PERFORATIONS DISTRIBUTED THROUGHOUT THE SURFACE THERE-
Claim 2
Dependent Claim
53 words
APPARATUS COMPRISING: A CONDUIT ADAPTED TO CARRY ORGANIC FLUID; A PLASTIC FILM ADHESIVELY ENGAGED TO THE INNER WALL OF SAID CONDUIT, SAID PLASTIC FILM BEING OF A COMPOSITION THAT IS PERMEABLE TO THE ORGANIC FLUID CARRIED BY SAID CONDUIT AND HAVING A PLURALITY OF CLOSELY SPACED FINE PERFORATIONS DISTRIBUTED THROUGHOUT THE SURFACE THERE-
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |