Patent USRE20152E successfully refreshed from Google Patents.
Patent US2807282A successfully refreshed from Google Patents.
US2807282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced carbonaceous pipe and method of making same
Assignee: Union Carbide Corp
•
Filing: 1954-02-17
•
Granted: 1957-09-24
•
Expires: 1974-02-17
Abstract
No abstract record available.
Inventors
- 👤 Willie H Watts
- 👤 Robert P Stambaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:34
CPC Classifications
F; F16; F16L; F16L23/00; F16L23/12; F16L9/00; F16L9/12; F16L9/127; F16L9/128; F16L9/133
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
AN ARTICLE OF MANUFACTURE COMPRISING, IN COMBINATION, A NORMALLY FRAGILE, POROUS CARBONACEOUS PIPE, A WOVEN FIBROUS SLEEVING AFFIXED ON THE EXTERNAL SURFACE OF SAID PIPE, AND AN INFUSIBLE RESIN, SAID RESIN BEING PRESENT IN THE PORES OF SAID PIPE, ON THE SURFACE THEREOF, AND IN THE INTERSTICES BETWEEN THE FIBERS OF SAID WOVEN, FIBROUS SLEEVING.
Claim 2
Dependent Claim
55 words
AN ARTICLE OF MANUFACTURE COMPRISING, IN COMBINATION, A NORMALLY FRAGILE, POROUS CARBONACEOUS PIPE, A WOVEN FIBROUS SLEEVING AFFIXED ON THE EXTERNAL SURFACE OF SAID PIPE, AND AN INFUSIBLE RESIN, SAID RESIN BEING PRESENT IN THE PORES OF SAID PIPE, ON THE SURFACE THEREOF, AND IN THE INTERSTICES BETWEEN THE FIBERS OF SAID WOVEN, FIBROUS SLEEVING.
References Cited (Backward Citations)
US1620940A
Cited
US1065495A
Cited
US2174887A
Cited
US2296781A
Cited
US2354090A
Cited
US2510941A
Cited
US2611721A
Cited
US2653118A
Cited
GB721211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |