US3232926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
5,5'-methylene-bis(halopyrimidine) dyestuffs
Assignee: GAF Chemicals Corp
•
Filing: 1962-12-31
•
Granted: 1966-02-01
•
Expires: 1982-12-31
Abstract
No abstract record available.
Inventors
- 👤 Randall David Irwin
- 👤 Schmidt-Nickels Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 03:17
CPC Classifications
C; C09; C09B; C09B62/00; C09B62/02; C09B62/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
AN ORGANIC WATER SOLUBLE DYESTUFF SELECTED FROM THE GROUP CONSISTING OF THOSE OF THE FORMULAE
Claim 2
Dependent Claim
15 words
AN ORGANIC WATER SOLUBLE DYESTUFF SELECTED FROM THE GROUP CONSISTING OF THOSE OF THE FORMULAE
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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |