US3265093A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous pipe impregnated with a highly aromatic petroleum-derived resin
Assignee: Standard Oil Co
•
Filing: 1961-09-18
•
Granted: 1966-08-09
•
Expires: 1981-09-18
Abstract
No abstract record available.
Inventors
- 👤 John C Wisniewski
- 👤 Thomas H Madden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:43
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/46; C04B41/47; C04B41/478; C04B41/009; F; F16; F16L; F16L57/00; F16L58/00; F16L58/02; F16L9/00; F16L9/14; C04B2111/00; C04B2111/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
A CONDUIT COMPRISING IN COMBINATION AN OIL PREMEABLE WALL AND AN IMPREGNANT HAVING A RING AND BALL SOFTENING POINT WITHIN THE RANGE OF 150 TO 250*F. CONSISTING
Claim 2
Dependent Claim
27 words
A CONDUIT COMPRISING IN COMBINATION AN OIL PREMEABLE WALL AND AN IMPREGNANT HAVING A RING AND BALL SOFTENING POINT WITHIN THE RANGE OF 150 TO 250*F. CONSISTING
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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) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |