US2720548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dichloromethylbenzhydrols and their ethers
Assignee: Rohm and Haas Co
•
Filing: 1953-10-05
•
Granted: 1955-10-11
•
Expires: 1973-10-05
Abstract
No abstract record available.
Inventors
- 👤 W E Craig
- 👤 Elwood Y Shropshire
- 👤 Harold F Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:43
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/14; C07C43/17; C07C43/174; C07C43/1742
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
8 words
A PROCESS FOR PREPARING COMPOUNDS OF THE STRUCTURE
References Cited (Backward Citations)
US2315557A
Cited
US2430586A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-10-10 | 1959-04-11 | 1959-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-10-10 | 1963-04-11 | 1963-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-10-10 | 1967-04-11 | 1967-10-11 | $7700.00 | Window Closed / Lapsed |