US2848451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyethoxamers of novel quaternary ammonium salts and method for preparing the same
Assignee: Wyeth Holdings LLC
•
Filing: 1957-05-22
•
Granted: 1958-08-19
•
Expires: 1977-05-22
Abstract
No abstract record available.
Inventors
- 👤 Walter H Schuller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:28
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/35; D06M13/355; D06M13/358; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/19; Y10S260/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
26 words
AS A NEW COMPOSITION: A N-(2-HYDROXYETHYL)-N(4 - AMINO - 6 - ANILINO - S - TRIAZINYLMETHYL) - N,N - DIMETHYLAMMONIUM CHLORIDE REPRESENTED BY THE GENERAL FORMULA:
Claim 2
Dependent Claim
26 words
AS A NEW COMPOSITION: A N-(2-HYDROXYETHYL)-N(4 - AMINO - 6 - ANILINO - S - TRIAZINYLMETHYL) - N,N - DIMETHYLAMMONIUM CHLORIDE REPRESENTED BY THE GENERAL FORMULA:
References Cited (Backward Citations)
US2719156A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-18 | 1962-02-17 | 1962-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-18 | 1966-02-17 | 1966-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-18 | 1970-02-17 | 1970-08-19 | $7700.00 | Window Closed / Lapsed |