US3240720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bifunctional monomers and process for their production
Assignee: 3M Co
•
Filing: 1960-04-22
•
Granted: 1966-03-15
•
Expires: 1980-04-22
Abstract
No abstract record available.
Inventors
- 👤 George H Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:39
CPC Classifications
C; C07; C07D; C07D405/00; C07D405/02; C07D405/06; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/28; C08G63/00; C08G63/91; C08G65/00; C08G65/02; C08G65/04; C08G65/22; C08G69/00; C08G69/02; C08G69/26; C08G69/34; C08G73/00; C08G73/02; C08G73/0206; C08G73/0213; C08G73/022; C08G75/00; C08G75/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
AN N-(2,3-EPOXYPROPYL)-2-ALKYLAZIRIDINE COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
6 words
AN N-(2,3-EPOXYPROPYL)-2-ALKYLAZIRIDINE COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
9 words
A HOMOPOLYMER OF AN N-(2,3-EPOXYPROPYL)-2-ALKYLAZIRIDINE COMPOUND OF THE FORUMLA:
Claim 4
Dependent Claim
9 words
A HOMOPOLYMER OF AN N-(2,3-EPOXYPROPYL)-2-ALKYLAZIRIDINE COMPOUND OF THE FORUMLA:
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |