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 09:52
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.
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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) | 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 |