Patent US2977267A successfully refreshed from Google Patents.
US2977267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packaging of tacky materials
Assignee: Texaco Development Corp
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Filing: 1955-12-06
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Granted: 1961-03-28
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Expires: 1975-12-06
Abstract
No abstract record available.
Inventors
- 👤 Merton H Douthitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:46
CPC Classifications
B; B29; B29C; B29C37/00; B29C37/0067; B29C37/0075; B65; B65D; B65D57/00; B65D57/002
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
THE PROCESS FOR COVERING A CORE MEMBER HAVING A TACKY SURFACE CONTAINING RUBBERY ELASTOMER WITH A FLEXIBLE SHEET WHICH PROCESS COMPRISES INTERPOSING BETWEEN SAID SHEET AND SAID TACKY SURFACE A FILM OF PRESSURESENSITIVE ADHESIVE MASS HAVING A COMPOSITION DIFFERENT FROM SAID TACKY SURFACE, SAID FILM OF PRESSURE-SENSITIVE ADHESIVE MASS BONDING SAID SHEET TO SAID TACKY SURFACE AND RENDERING SAID SHEET STRIPPABLE THEREFROM, SAID CORE MEMBER BEING A RAILROAD TIE PAD COMPRISING A COMPOSITION CONTAINING ASPHALT, PINE TAR AND RUBBERY ELASTOMER.
References Cited (Backward Citations)
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US2556078A
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US2770421A
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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) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |