US2582568A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicon-containing esters
Assignee: Dow Silicones Corp
•
Filing: 1948-07-02
•
Granted: 1952-01-15
•
Expires: 1968-07-02
Abstract
No abstract record available.
Inventors
- 👤 Speier John Leopold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:24
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/14; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/081; Y; Y10; Y10S; Y10S260/00; Y10S260/47
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
COMPOUNDS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
5 words
COMPOUNDS OF THE GENERAL 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 |