Patent US3424204A successfully refreshed from Google Patents.
US3424204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced paper pipe
Assignee: Individual
•
Filing: 1964-10-27
•
Granted: 1969-01-28
•
Expires: 1984-10-27
Abstract
No abstract record available.
Inventors
- 👤 Isao Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:04
CPC Classifications
B; B31; B31C; B31C3/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A PIPE COMPRISING A HOLLOW INNERMOST PAPER CORE LAYER, A LAYER OF KNITTED FIBER YARN DISPOSED ABOUT SAID PAPER CORE LAYER, SAID LAYER OF KNITTED FIBER YARN COMPRISING EXCLUSIVELY A SUBSTANTIALLY SPIRALLY INTERTWINED NETWORK EXTENDING ALONG THE LENGTH OF SAID PAPER CORE LAYER, AND A RESIN BINDER PERMEATING SAID LAYER OF KNITTED FIBER YARN AND BINDING SAID LAYER OF KNITTED FIBER YARN AND SAID PAPER CORE LAYER TOGETHER.
Claim 2
Dependent Claim
68 words
A PIPE COMPRISING A HOLLOW INNERMOST PAPER CORE LAYER, A LAYER OF KNITTED FIBER YARN DISPOSED ABOUT SAID PAPER CORE LAYER, SAID LAYER OF KNITTED FIBER YARN COMPRISING EXCLUSIVELY A SUBSTANTIALLY SPIRALLY INTERTWINED NETWORK EXTENDING ALONG THE LENGTH OF SAID PAPER CORE LAYER, AND A RESIN BINDER PERMEATING SAID LAYER OF KNITTED FIBER YARN AND BINDING SAID LAYER OF KNITTED FIBER YARN AND SAID PAPER CORE LAYER TOGETHER.
References Cited (Backward Citations)
US1312780A
Cited
US2001569A
Cited
US2286267A
Cited
US2969812A
Cited
US2854031A
Cited
US3127910A
Cited
US2877150A
Cited
US2888954A
Cited
FR1136984A
Cited
US3007497A
Cited
US3080893A
Cited
US2945638A
Cited
US3054428A
Cited
US3194275A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-28 | 1972-07-29 | 1973-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-28 | 1976-07-29 | 1977-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-28 | 1980-07-29 | 1981-01-28 | $7700.00 | Window Closed / Lapsed |