US3116301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxyesters of 3, 4-dihydropyran-2-carboxylic acids
Assignee: Shell USA Inc
•
Filing: 1962-03-07
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Granted: 1963-12-31
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Expires: 1982-03-07
Abstract
No abstract record available.
Inventors
- 👤 Paul H Williams
- 👤 Roy T Holm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:26
CPC Classifications
C; C07; C07D; C07D407/00; C07D407/02; C07D407/06; C07D309/00; C07D309/16; C07D309/20; C07D309/22; C07D309/28; C08; C08G; C08G59/00; C08G59/14; C08G59/1433; C08G59/1438; C08G59/145; C08G59/18; C08G59/20; C08G59/22; C08G59/226; C08G59/26; C08G59/30; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1545; C08J; C08J2363/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
5 words
EPOXY ESTER OF THE FORMULA
Claim 2
Dependent Claim
5 words
EPOXY ESTER 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) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |