US3454669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel epoxy curing agents
Assignee: Lubrizol Corp
•
Filing: 1967-08-07
•
Granted: 1969-07-08
•
Expires: 1987-08-07
Abstract
No abstract record available.
Inventors
- 👤 Michael A Laudise
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:24
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20; C07C; C07C235/00; C07C235/02; C07C235/04; C07C235/06; C07C335/00; C07C335/30; C07C335/32; C07D295/00; C07D295/04; C07D295/14; C07D295/145; C07D295/15; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/1651; C08; C08B; C08B11/00; C08B11/02; C08B11/04; C08B11/14; C08B11/15; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/44
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US3277056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |