US3250750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anionic polymerization of lactams with pyridazines as activators
Assignee: Honeywell International Inc
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Filing: 1962-04-06
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Granted: 1966-05-10
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Expires: 1982-04-06
Abstract
No abstract record available.
Inventors
- 👤 Edward W Pietrusza
- 👤 Pinter Rudolph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:49
CPC Classifications
C; C07; C07D; C07D403/00; C07D403/02; C07D403/04; C07D201/00; C07D201/14; C07D413/00; C07D413/02; C07D413/04; C07D417/00; C07D417/02; C07D417/04; C08; C08G; C08G69/00; C08G69/02; C08G69/08; C08G69/14; C08G69/16; C08G69/18; C08G69/20; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/10; C08J2377/00; C08J2377/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
14 words
AS A NEW COMPOSITION OF MATTER 3,6-DI(N-POLY-ECAPROAMIDO) PYRIDAZINE OF A MELTING POINT ABOUT 225*C.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |