US3544485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of activating catalytic alloys
Assignee: Toray Industries Inc
•
Filing: 1967-10-16
•
Granted: 1970-12-01
•
Expires: 1987-10-16
Abstract
No abstract record available.
Inventors
- 👤 Shinichi Taira
- 👤 Akio Kuroda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:26
CPC Classifications
B; B01; B01J; B01J25/00; Y; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1628190A
Cited
US2326275A
Cited
US2328140A
Cited
US2402626A
Cited
US2650204A
Cited
US3235513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-30 | 1974-06-01 | 1974-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-30 | 1978-06-01 | 1978-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-30 | 1982-06-01 | 1982-12-01 | $7700.00 | Window Closed / Lapsed |