US2674557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making nonmetallic pipe
Assignee: H D BOGGS CO Ltd
•
Filing: 1949-03-11
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Granted: 1954-04-06
•
Expires: 1969-03-11
Abstract
No abstract record available.
Inventors
- 👤 Herbert D Boggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:38
CPC Classifications
B; B32; B32B; B32B27/00; B29; B29C; B29C53/00; B29C53/56; B29C53/58; B29C53/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS FOR THE PRODUCTION OF TUBULAR MEMBERS COMPOSED OF PLASTIC-BONDED LAMINATIONS OF FIBROUS MATERIAL WHICH COMPRISES IMPREGNATING A CONTINUOUS LENGTH OF FIBRE WEB WITH A LIQUID THERMOSETTING MATERIAL CAPABLE OF POLYMERIZING TO AN INFUSIBLE SOLID, PARTIALLY CURING THE THERMOSETTING MATERIAL IN THE IMPREGNATED WEB WHILE THE IMPREGNATED WEB IS OUTSTRETCHED WHEREBY A TACKY SURFACE IS FORMED UPON THE WEB, WINDING SECTION OF THE PARTIALLY CURED WEB INTO A TUBULAR SHAPE ONE LAYER IN THICKNESS, SUBSTANTIALLY
Claim 2
Dependent Claim
76 words
A PROCESS FOR THE PRODUCTION OF TUBULAR MEMBERS COMPOSED OF PLASTIC-BONDED LAMINATIONS OF FIBROUS MATERIAL WHICH COMPRISES IMPREGNATING A CONTINUOUS LENGTH OF FIBRE WEB WITH A LIQUID THERMOSETTING MATERIAL CAPABLE OF POLYMERIZING TO AN INFUSIBLE SOLID, PARTIALLY CURING THE THERMOSETTING MATERIAL IN THE IMPREGNATED WEB WHILE THE IMPREGNATED WEB IS OUTSTRETCHED WHEREBY A TACKY SURFACE IS FORMED UPON THE WEB, WINDING SECTION OF THE PARTIALLY CURED WEB INTO A TUBULAR SHAPE ONE LAYER IN THICKNESS, SUBSTANTIALLY
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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) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |