US2504064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyethyleneglycol ethers of bis (di-alkyl-hydroxyphenyl)-methane
Assignee: Rohm and Haas Co
•
Filing: 1946-04-05
•
Granted: 1950-04-11
•
Expires: 1966-04-05
Abstract
No abstract record available.
Inventors
- 👤 Louis H Bock
- 👤 James L Rainey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:23
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/20; C07C43/23; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
THE COMPOUND HAVING THE FORMULA:
Claim 2
Dependent Claim
5 words
THE COMPOUND HAVING THE FORMULA:
References Cited (Backward Citations)
US2040212A
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US1633927A
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US2060410A
Cited
US2076624A
Cited
US2250480A
Cited
US2233381A
Cited
US2430002A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-10 | 1953-10-10 | 1954-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-10 | 1957-10-10 | 1958-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-10 | 1961-10-10 | 1962-04-11 | $7700.00 | Window Closed / Lapsed |