US2929835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reacting an alkylene oxide with an acrylic-type acid using an alkaline organic or inorganic catalyst
Assignee: Bridgestone Firestone Inc
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Filing: 1957-06-06
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Granted: 1960-03-22
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Expires: 1977-06-06
Abstract
No abstract record available.
Inventors
- 👤 Robert A Hayes
- 👤 Stephen P Boutsicaris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:06
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/12; C08F20/16; C08F20/18; C07; C07C; C07C67/00; C07C67/24; C07C67/26; C07C69/00; C07C69/52; C07C69/533; C07C69/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
THE METHOD OF PRODUCING AN ALKYLENE GLYCOL MONOESTER, WHICH COMPRISES REACTING (1) 1.05 TO 1.50 MOLECULAR EQUIVALENTS OF AN ALKYLENE OXIDE IN WHICH THE ALKYLENE GROUP CONTAINS 2 TO 4 CARBON ATOMS, WITH (2) ONE MOLECULAR EQUIVALENT OF AN ACID FROM THE CLASS CONSISTING OF ACRYLIC AND METHACRYLIC ACIDS, USING AN ALKALINE CATALYST, AND STOPPING THE REACTION WHEN THE ACID NUMBER IS 2 TO 40.
Claim 2
Independent Claim
65 words
THE METHOD OF PRODUCING AN ALKYLENE GLYCOL MONOESTER, WHICH COMPRISES REACTING (1) 1.05 TO 1.50 MOLECULAR EQUIVALENTS OF AN ALKYLENE OXIDE IN WHICH THE ALKYLENE GROUP CONTAINS 2 TO 4 CARBON ATOMS, WITH (2) ONE MOLECULAR EQUIVALENT OF AN ACID FROM THE CLASS CONSISTING OF ACRYLIC AND METHACRYLIC ACIDS, USING AN ALKALINE CATALYST, AND STOPPING THE REACTION WHEN THE ACID NUMBER IS 2 TO 40.
References Cited (Backward Citations)
US2484487A
Cited
US2819296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-22 | 1963-09-21 | 1964-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-22 | 1967-09-21 | 1968-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-22 | 1971-09-21 | 1972-03-22 | $7700.00 | Window Closed / Lapsed |