US2905720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface-active acetals and formals
Assignee: Rohm and Haas Co
•
Filing: 1957-09-24
•
Granted: 1959-09-22
•
Expires: 1977-09-24
Abstract
No abstract record available.
Inventors
- 👤 Benneville Peter L De
- 👤 Homer J Sims
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:47
CPC Classifications
C; C07; C07C; C07C323/00; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
7 words
A COMPOSITION OF MATTER HAVING THE FORMULA
Claim 2
Dependent Claim
7 words
A COMPOSITION OF MATTER HAVING THE FORMULA
Claim 3
Independent Claim
9 words
A METHOD FOR PREPARING A COMPOUND HAVING THE FORMULA
Claim 4
Independent Claim
9 words
A METHOD FOR PREPARING A COMPOUND HAVING THE FORMULA
References Cited (Backward Citations)
US2205021A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-09-21 | 1963-03-23 | 1963-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-21 | 1967-03-23 | 1967-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-21 | 1971-03-23 | 1971-09-22 | $7700.00 | Window Closed / Lapsed |