US3156263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for pipe closure
Assignee: RTX Corp
•
Filing: 1962-02-09
•
Granted: 1964-11-10
•
Expires: 1982-02-09
Abstract
No abstract record available.
Inventors
- 👤 Barnet R Adelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:32
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/1003; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7723; Y10T137/7724; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49938
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
32 words
A SELF CLOSING PIPE COMPRISING A PIPE HAVING AN INTERNAL COATING THEREIN, SAID COATING COMPRISING AN IRREVERSIBLY HEAT FOAMABLE MATERIAL WHICH WILL SWELL UPON THE APPLICATION OF HEAT TO CLOSE THE PIPE.
References Cited (Backward Citations)
US2241086A
Cited
US2319498A
Cited
US2320371A
Cited
US2690987A
Cited
US2744042A
Cited
US2752951A
Cited
US2959508A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-10 | 1968-05-11 | 1968-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-10 | 1972-05-11 | 1972-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-10 | 1976-05-11 | 1976-11-10 | $7700.00 | Window Closed / Lapsed |