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US3405172A
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US
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Preparation of acrylic acid with the prevention of formation of acrylic polymers
Assignee: Distillers Co Yeast Ltd
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Filing: 1966-09-26
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Granted: 1968-10-08
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Expires: 1986-09-26
Abstract
No abstract record available.
Inventors
- 👤 Brown Christopher John
- 👤 Millidge Alfred Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:58
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16; C07C51/21; C07C51/25; C07C51/252; C07C51/42
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3065264A
Cited
US3002017A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-08 | 1972-04-08 | 1972-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-08 | 1976-04-08 | 1976-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-08 | 1980-04-08 | 1980-10-08 | $7700.00 | Window Closed / Lapsed |