US2680097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of phenates
Assignee: California Research LLC
•
Filing: 1953-06-24
•
Granted: 1954-06-01
•
Expires: 1973-06-24
Abstract
No abstract record available.
Inventors
- 👤 William T Stewart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:45
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/64; C07C37/66
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
46 words
A METHOD OF PREPARING CALCIUM AND LEAD SALTS OF PHENOLS WHICH COMPRISES REACTING A PHENOL WITH A METAL BASE SELECTED FROM THE GROUP CONSISTING OF CALCIUM AND LEAD BASIC-REACTING SUBSTANCES IN A REACTION MEDIUM CONSISTING ESSENTIALLY OF A DIHYDRIC ALCOHOL CONTAINING UP TO 6 CARBON ATOMS.
Claim 2
Independent Claim
46 words
A METHOD OF PREPARING CALCIUM AND LEAD SALTS OF PHENOLS WHICH COMPRISES REACTING A PHENOL WITH A METAL BASE SELECTED FROM THE GROUP CONSISTING OF CALCIUM AND LEAD BASIC-REACTING SUBSTANCES IN A REACTION MEDIUM CONSISTING ESSENTIALLY OF A DIHYDRIC ALCOHOL CONTAINING UP TO 6 CARBON ATOMS.
Claim 3
Independent Claim
65 words
A METHOD OF PREPARING AN OIL-SOLUBLE LEAD ALKYL PHENATE COMPRISING REACTING AN ALKYL PHENOL WITH A BASE SELECTED FROM THE GROUP CONSISTING OF LEAD OXIDE AND LEAD HYDROXIDE IN ETHYLENE GLYCOL REACTION MEDIUM, REMOVING A MAJOR PORTION OF THE ETHYLENE GLYCOL FROM THE REACTION ZONE, ADDING A MINERAL OIL, REMOVING THE BALANCE OF THE ETHYLENE GLYCOL FROM THE REACTION ZONE, AND FILTERING THE REACTION MIXTURE.
Claim 4
Independent Claim
65 words
A METHOD OF PREPARING AN OIL-SOLUBLE LEAD ALKYL PHENATE COMPRISING REACTING AN ALKYL PHENOL WITH A BASE SELECTED FROM THE GROUP CONSISTING OF LEAD OXIDE AND LEAD HYDROXIDE IN ETHYLENE GLYCOL REACTION MEDIUM, REMOVING A MAJOR PORTION OF THE ETHYLENE GLYCOL FROM THE REACTION ZONE, ADDING A MINERAL OIL, REMOVING THE BALANCE OF THE ETHYLENE GLYCOL FROM THE REACTION ZONE, AND FILTERING THE REACTION MIXTURE.
References Cited (Backward Citations)
US1955080A
Cited
FR823468A
Cited
US2252663A
Cited
US2228661A
Cited
US2331448A
Cited
US2340938A
Cited
US2409687A
Cited
US2402448A
Cited
US2449026A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-31 | 1957-11-30 | 1958-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-31 | 1961-11-30 | 1962-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-31 | 1965-11-30 | 1966-06-01 | $7700.00 | Window Closed / Lapsed |