Patent US3080893A successfully refreshed from Google Patents.
US3080893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced rigid plastic pipe
Assignee: 3M Co
•
Filing: 1956-06-29
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Granted: 1963-03-12
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Expires: 1976-06-29
Abstract
No abstract record available.
Inventors
- 👤 Donna S Craycraft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:49
CPC Classifications
F; F16; F16L; F16L9/00; F16L9/12; B; B29; B29C; B29C70/00; B29C70/04; B29C70/06; B29C70/08; B29C70/083; B29C70/085; B29C70/086; B29C70/10; B29C70/16; B29C70/20; B29C70/205; B29C70/207; F16L9/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A STIFF SHAPE-RETAINING CYLINDRICAL PIPE SECTION ADAPTED TO BE INTERCONNECTED WITH SIMILAR PIPE SECTION WITHOUT REDUCTION OF INTERNAL DIAMETER IN THE FORMATION OF CONTINUOUS IMPREVIOUS PIPELINE WHICH IS STRETCHABLE TO ACCOMMODIATE SURGES OF HIGH PRESSURE IN FLUID CONVEYED IN THE PIPELINE, SAID PIPE SECTION COMPRISING A THIN RESINOUS WALL REINFORCED WITH CONTINUOUS GLASS FILAMENTS BONDED TOGETHER BY SUBSTANTIALLY INFUSIBLE AND INSOLUBLE THERMOSET RESINOUS MATERIAL; AND ADHERENTLY BONDED TO THE RESINOUS WALL, AN IMPERVIOUS, ELASTIC, THERMOPLASTIC IMPACT-RESISTANT LINER COMPRISING A MIXTURE OF POLYVINYL
Claim 2
Dependent Claim
82 words
A STIFF SHAPE-RETAINING CYLINDRICAL PIPE SECTION ADAPTED TO BE INTERCONNECTED WITH SIMILAR PIPE SECTION WITHOUT REDUCTION OF INTERNAL DIAMETER IN THE FORMATION OF CONTINUOUS IMPREVIOUS PIPELINE WHICH IS STRETCHABLE TO ACCOMMODIATE SURGES OF HIGH PRESSURE IN FLUID CONVEYED IN THE PIPELINE, SAID PIPE SECTION COMPRISING A THIN RESINOUS WALL REINFORCED WITH CONTINUOUS GLASS FILAMENTS BONDED TOGETHER BY SUBSTANTIALLY INFUSIBLE AND INSOLUBLE THERMOSET RESINOUS MATERIAL; AND ADHERENTLY BONDED TO THE RESINOUS WALL, AN IMPERVIOUS, ELASTIC, THERMOPLASTIC IMPACT-RESISTANT LINER COMPRISING A MIXTURE OF POLYVINYL
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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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |