US3039495A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated bituminized fiber pipe
Assignee: Patent and Licensing Corp
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Filing: 1960-02-23
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Granted: 1962-06-19
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Expires: 1980-02-23
Abstract
No abstract record available.
Inventors
- 👤 John J Drukker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:59
CPC Classifications
F; F16; F16L; F16L58/00; F16L58/02; F16L58/04; F16L58/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
49 words
AN IMPROVED BITUMINIZED FIBER PIPE HAVING A CLEAN, NON-IRRITAITNG PERIPHERAL SURFACE COMPRISING A CELLULOSIC FIBER PIPE IMPREGNATED WITH COLAR TAR PITCH AND HAVING ON THE SAME PERIPHERAL SURFACE A RELATIVELY THIN COATING OF A DRIED FILM OF A MIXTURE OF CLAY TYPE ASPHALT EMULSION AND SOAP TYPE ASPHALT EMULSION.
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) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |