US2996538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of monomeric polyglycol acrylate and methacrylate esters
Assignee: Dow Chemical Co
•
Filing: 1957-11-25
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Granted: 1961-08-15
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Expires: 1977-11-25
Abstract
No abstract record available.
Inventors
- 👤 Christiaan P Van Dijk
- 👤 Stanley A Murdock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:58
CPC Classifications
C; C08; C08F; C08F290/00; C08F290/02; C08F290/06; C08F290/062; C07; C07C; C07C67/00; C07C67/48; C07C67/52; C07C67/54; C07C67/58; C07C67/62; C08F20/00; C08F20/02; C08F20/10; C08F20/26; C08F20/28; C08F28/00; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/331; C08G65/332; C08G65/3322; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
IN THE METHOD OF PREPARING A MONOMERIC POLYGLYCOL ESTER PRODUCT OF THE FORMULA:
Claim 2
Dependent Claim
13 words
IN THE METHOD OF PREPARING A MONOMERIC POLYGLYCOL ESTER PRODUCT OF THE FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |