US2974140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted 2-alkenyltetrahydro-1, 3-oxazines
Assignee: Bayer Corp
•
Filing: 1959-03-04
•
Granted: 1961-03-07
•
Expires: 1979-03-04
Abstract
No abstract record available.
Inventors
- 👤 Willard J Croxall
- 👤 Jack H Mellema
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:11
CPC Classifications
C; C07; C07D; C07D265/00; C07D265/04; C07D265/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A SUBSTITUTED ALKENYLTERTRAHYDRO-1,3-OXAZINE HAVING THE FORMULA
Claim 2
Dependent Claim
6 words
A SUBSTITUTED ALKENYLTERTRAHYDRO-1,3-OXAZINE HAVING THE FORMULA
References Cited (Backward Citations)
US2831858A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |