US3503784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Smooth surfaced sheet materials and method of manufacturing the same
Assignee: Kuraray Co Ltd
•
Filing: 1966-09-29
•
Granted: 1970-03-31
•
Expires: 1986-09-29
Abstract
No abstract record available.
Inventors
- 👤 Eiichi Morita
- 👤 Osamu Fukushima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:29
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/12; D06N3/14; D06N3/0056; D06N3/0061; Y; Y10; Y10S; Y10S428/00; Y10S428/904; Y10T; Y10T442/00; Y10T442/20; Y10T442/2033
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3085731A
Cited
US3005727A
Cited
GB908188A
Cited
US3238056A
Cited
US3259537A
Cited
US3288632A
Cited
US3362845A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-03-30 | 1973-09-29 | 1974-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-03-30 | 1977-09-29 | 1978-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-03-30 | 1981-09-29 | 1982-03-31 | $7700.00 | Window Closed / Lapsed |