US3050786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methods of lining and jacketing tubular members with prestressed polytetrafluoroethylene
Assignee: Resistoflex Corp
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Filing: 1957-01-30
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Granted: 1962-08-28
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Expires: 1977-01-30
Abstract
No abstract record available.
Inventors
- 👤 John Alexander N T St
- 👤 William E Titterton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:58
CPC Classifications
F; F16; F16L; F16L58/00; F16L58/02; F16L58/04; F16L58/10; F16L58/1009; F16L58/1027; B; B29; B29C; B29C49/00; B29C49/0005; B29C49/24; B29C49/26; B29C55/00; B29C55/30; B29C61/00; B29C61/06; B29C61/08; B29C63/00; B29C63/38; B29C63/46; B29C2949/00; B29C2949/07; B29C2949/079; B29C2949/08; B29K; B29K2027/00; B29K2027/12; B29K2027/18; B29K2105/00; B29K2105/25; B29K2105/253; B29K2105/258; B29L; B29L2023/00; B29L2023/22; Y; Y10; Y10S; Y10S138/00; Y10S138/03; Y10S159/00; Y10S159/15; Y10S264/00; Y10S264/71; Y10S285/00; Y10S285/908; Y10S285/909; Y10T; Y10T29/00; Y10T29/49; Y10T29/49805
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
THE METHOD OF TIGHTLY JACKETING A LONGITUDINAL MEMBER WITH POLYTETRAFLUOROETHYLENE RESIN WHICH COMPRISES THE STEPS OF SELECTING A PRE-STRESSED SINTERED TUBE OF SAID RESIN WHICH IS SUBSTANTIALLY DIMENSIONALLY STABLE INDEFINITELY AT ROOM TEMPERATURE BUT ADAPTED DUE TO ITS PRESTRESSING TO ALTER ITS GIRTH SUBSTANTIALLY UNIFORMLY THROUGHOUT ITS LENGTH WITHOUT THE ASSISTANCE OF MOLDING PRESSURE UPON BEING HEATED TO A GIVEN TEMPERATURE BETWEEN 300* F. AND 620* F. AND THEREAFTER COOLED, THE NATURE OF SAID
Claim 2
Independent Claim
74 words
THE METHOD OF TIGHTLY JACKETING A LONGITUDINAL MEMBER WITH POLYTETRAFLUOROETHYLENE RESIN WHICH COMPRISES THE STEPS OF SELECTING A PRE-STRESSED SINTERED TUBE OF SAID RESIN WHICH IS SUBSTANTIALLY DIMENSIONALLY STABLE INDEFINITELY AT ROOM TEMPERATURE BUT ADAPTED DUE TO ITS PRESTRESSING TO ALTER ITS GIRTH SUBSTANTIALLY UNIFORMLY THROUGHOUT ITS LENGTH WITHOUT THE ASSISTANCE OF MOLDING PRESSURE UPON BEING HEATED TO A GIVEN TEMPERATURE BETWEEN 300* F. AND 620* F. AND THEREAFTER COOLED, THE NATURE OF SAID
References Cited (Backward Citations)
US1052081A
Cited
US2027962A
Cited
US2377928A
Cited
US2400099A
Cited
US2452884A
Cited
US2578522A
Cited
US2661499A
Cited
US2616127A
Cited
US2724672A
Cited
US2774993A
Cited
US2728356A
Cited
US2821155A
Cited
US2752637A
Cited
US2781552A
Cited
US2907103A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |