US3440257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tris(p-dialkylaminophenyl)aminium hexafluoroantimonates and -arsenates
Assignee: Wyeth Holdings LLC
•
Filing: 1966-10-14
•
Granted: 1969-04-22
•
Expires: 1986-10-14
Abstract
No abstract record available.
Inventors
- 👤 Peter Vincent Susi
- 👤 Ralph Arthur Coleman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:09
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/20; G02B5/22; G02B5/223; C; C03; C03C; C03C17/00; C03C17/28; C08; C08K; C08K5/00; C08K5/0008; C08K5/16; C08K5/17; C08K5/18; C08K5/19
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
4 words
COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
4 words
COMPOUNDS OF THE FORMULA
References Cited (Backward Citations)
US3201399A
Cited
US3214455A
Cited
US3253035A
Cited
US3132166A
Cited
US3133107A
Cited
US3133106A
Cited
US3152160A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-21 | 1972-10-21 | 1973-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-21 | 1976-10-21 | 1977-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-21 | 1980-10-21 | 1981-04-22 | $7700.00 | Window Closed / Lapsed |