Patent US2462049A successfully refreshed from Google Patents.
Patent US3439057A successfully refreshed from Google Patents.
US3439057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of macrocyclic compounds
Assignee: Goodyear Tire and Rubber Co
•
Filing: 1967-09-01
•
Granted: 1969-04-15
•
Expires: 1987-09-01
Abstract
No abstract record available.
Inventors
- 👤 Nissim Calderon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:26
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0215; B01J31/0217; B01J31/0201; B01J31/0202; B01J31/12; B01J31/14; B01J31/143; B01J31/26; B01J31/34; C; C07; C07C; C07C6/00; C07C6/02; C07C6/04; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/94
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3257332A
Cited
US3259610A
Cited
BE667392A
Cited
FR1425601A
Cited
NL6601466A
Cited
NL6605105A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-14 | 1972-10-14 | 1973-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-14 | 1976-10-14 | 1977-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-14 | 1980-10-14 | 1981-04-15 | $7700.00 | Window Closed / Lapsed |