Patent US2800510A successfully refreshed from Google Patents.
US2800510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of ketols
Assignee: Porocel Industries LLC
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Filing: 1950-06-13
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Granted: 1957-07-23
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Expires: 1970-06-13
Abstract
No abstract record available.
Inventors
- 👤 John G Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:27
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A PROCESS FOR THE ALDOL CONDENSATION OF KETONES TO PRODUCE KETOLS WHICH COMPRISES HEATING A LOW MOLECULAR WEIGHT KETONE UNDER REFLUXING CONDITIONS IN THE PRESENCE OF A THERMALLY ACTIVATED BAUXITE CATALYST.
Claim 2
Dependent Claim
31 words
A PROCESS FOR THE ALDOL CONDENSATION OF KETONES TO PRODUCE KETOLS WHICH COMPRISES HEATING A LOW MOLECULAR WEIGHT KETONE UNDER REFLUXING CONDITIONS IN THE PRESENCE OF A THERMALLY ACTIVATED BAUXITE CATALYST.
References Cited (Backward Citations)
DE349915C
Cited
US1778517A
Cited
US1977178A
Cited
US2130592A
Cited
US2369197A
Cited
GB592116A
Cited
US2406081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-22 | 1961-01-21 | 1961-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-22 | 1965-01-21 | 1965-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-22 | 1969-01-21 | 1969-07-23 | $7700.00 | Window Closed / Lapsed |