US2630459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chloromethylation
Assignee: Rohm and Haas Co
•
Filing: 1950-06-06
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Granted: 1953-03-03
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Expires: 1970-06-06
Abstract
No abstract record available.
Inventors
- 👤 Harry R Raterink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:27
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A PROCES FO CHLOROMETHLATING ALKYLBENZENES WHICH COMPRISES MIXING TOGETHER AND REACTING BETWEEN 0* AND 70* C. FORMALDEHYDE, A LIQUID SATURATED PRIMARY ALCOHOL CONSISTING OF AT LEAST ONE FUNCTIONAL HYDROXYL GROUP AND A HYDROCARBON RESIDUE, CHLOROSULFONIC ACID, AND AN ALKYLBENZENE,
Claim 2
Dependent Claim
39 words
A PROCES FO CHLOROMETHLATING ALKYLBENZENES WHICH COMPRISES MIXING TOGETHER AND REACTING BETWEEN 0* AND 70* C. FORMALDEHYDE, A LIQUID SATURATED PRIMARY ALCOHOL CONSISTING OF AT LEAST ONE FUNCTIONAL HYDROXYL GROUP AND A HYDROCARBON RESIDUE, CHLOROSULFONIC ACID, AND AN ALKYLBENZENE,
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) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |