US3352875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Methylenebis [(nu-hydroxyalkyl-piperidyl) alkyl] piperidines
Assignee: Reilly Tar and Chemical Corp
•
Filing: 1965-07-28
•
Granted: 1967-11-14
•
Expires: 1985-07-28
Abstract
No abstract record available.
Inventors
- 👤 Charles K Mcgill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:24
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/08; C07D211/10; C07D211/14; C08; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/6854; C08G63/6856
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
METHYLENEBIS((N- HYDROXYALKYL - PIPERIDYL)ALKYL) PIPERIDINES WHOSE FORMULA IS
Claim 2
Dependent Claim
8 words
METHYLENEBIS((N- HYDROXYALKYL - PIPERIDYL)ALKYL) PIPERIDINES WHOSE FORMULA IS
References Cited (Backward Citations)
US3317546A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |