US3075996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brightening agents
Assignee: Bayer AG
•
Filing: 1960-01-11
•
Granted: 1963-01-29
•
Expires: 1980-01-11
Abstract
No abstract record available.
Inventors
- 👤 Raue Roderich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:15
CPC Classifications
C; C07; C07D; C07D311/00; C07D311/02; C07D311/78; C07D311/92; C07D311/04; C07D311/06; C07D311/08; C09; C09B; C09B57/00; C09B57/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
6 words
A QUATERNIZED COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
6 words
A QUATERNIZED COMPOUND OF THE FORMULA
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-28 | 1966-07-30 | 1967-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-28 | 1970-07-30 | 1971-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-28 | 1974-07-30 | 1975-01-29 | $7700.00 | Window Closed / Lapsed |