US3673025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a polyurethane rubber covered roll
Assignee: Yamauchi Rubber Industry Co Ltd
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Filing: 1969-08-11
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Granted: 1972-06-27
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Expires: 1989-08-11
Abstract
Abstract THIS POLYURETHANE RUBBER COVERED ROLL CONSISTS OF A METAL CORE FIXED BY WINDING WITH A FIBER PREVIOUSLY IMPREGNATED WITH THERMOSETTING RESIN SOLUTION TO FORM A SUBSTRATUM AND THEN A POLYURETHANE RUBBER LAYER IS CAST MOLDED ON THE PERIPHERY OF SAID SUBSTRATUM.
Inventors
- 👤 Yasuo Fukuyama
- 👤 Yosuke Okada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:35
CPC Classifications
B; B29; B29D; B29D99/00; B29D99/0032; B29D99/0035; D; D21; D21F; D21F3/00; D21F3/02; D21F3/08; B29K; B29K2995/00; B29K2995/0037; B29K2995/0049; B29L; B29L2009/00; B29L2031/00; B29L2031/32; B29L2031/324
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |