Patent US3002034A successfully refreshed from Google Patents.
US3002034A
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Process for producing diaryl paraffins
Assignee: Gulf Research and Development Co
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Filing: 1958-12-17
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Granted: 1961-09-26
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Expires: 1978-12-17
Abstract
No abstract record available.
Inventors
- 👤 Schulz Johann Gustav David
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:20
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/86; C07C2/862; C07C2/867; C07C2527/00; C07C2527/02; C07C2527/053; C07C2527/054; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1206; C07C2527/1213; C07C2527/138; C07C2527/14; C07C2527/16; C07C2527/167; C07C2527/173
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS FOR PREPARING A DIARYL PARAFFIN WHICH COMPRISES DISSOLVING ACETALDEHYDE IN TOLUENE AND THEREAFTER BRINGING THE SOLUTION OBTAINED IN CONTACT WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF SULFURIC ACID HAVING A CONCENTRATION OF AT LEAST 85 PERCENT, BORON TRIFLUORIDE, HYDROGEN FLUORIDE, PHOSPHORIC ACID AND ZINC CHLORIDE FOR REACTION THEREWITH AT A TEMPERATURE ABOVE 5*C.
Claim 2
Dependent Claim
57 words
A PROCESS FOR PREPARING A DIARYL PARAFFIN WHICH COMPRISES DISSOLVING ACETALDEHYDE IN TOLUENE AND THEREAFTER BRINGING THE SOLUTION OBTAINED IN CONTACT WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF SULFURIC ACID HAVING A CONCENTRATION OF AT LEAST 85 PERCENT, BORON TRIFLUORIDE, HYDROGEN FLUORIDE, PHOSPHORIC ACID AND ZINC CHLORIDE FOR REACTION THEREWITH AT A TEMPERATURE ABOVE 5*C.
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) | 1964-09-25 | 1965-03-27 | 1965-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-25 | 1969-03-27 | 1969-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-25 | 1973-03-27 | 1973-09-26 | $7700.00 | Window Closed / Lapsed |