Patent US2573580A successfully refreshed from Google Patents.
US2573580A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of aromatic sulfones
Assignee: Uniroyal Inc
•
Filing: 1949-03-23
•
Granted: 1951-10-30
•
Expires: 1969-03-23
Abstract
No abstract record available.
Inventors
- 👤 Elbert C Ladd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:03
CPC Classifications
C; C07; C07C; C07C317/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
11 words
THE METHOD OF MAKING A P-CHLOROPHENYL OMEGA-HALOGENOALKYL SULFONE HAVING THE FORMULA
Claim 2
Independent Claim
11 words
THE METHOD OF MAKING A P-CHLOROPHENYL OMEGA-HALOGENOALKYL SULFONE HAVING THE FORMULA
Claim 3
Dependent Claim
6 words
A CHEMICAL COMPOUND HAVING THE FORMULA
Claim 4
Dependent Claim
6 words
A CHEMICAL COMPOUND HAVING 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) | 1954-10-29 | 1955-04-30 | 1955-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-29 | 1959-04-30 | 1959-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-29 | 1963-04-30 | 1963-10-30 | $7700.00 | Window Closed / Lapsed |