US2582748A
Expired / Lapsed
US
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Quaternary ammonium compounds having a hydroxybutynyl substituent
Assignee: Rohm and Haas Co
•
Filing: 1951-01-04
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Granted: 1952-01-15
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Expires: 1971-01-04
Abstract
No abstract record available.
Inventors
- 👤 Willard J Croxall
- 👤 Melamed Sidney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:44
CPC Classifications
A; A01; A01N; A01N33/00; A01N33/02; A01N33/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
AS NEW CHEMICAL SUBSTANCES, COMPOUNDS OF THE FORMULA
Claim 2
Dependent Claim
8 words
AS NEW CHEMICAL SUBSTANCES, COMPOUNDS 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) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |