US3284513A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the thermal hydro-dealkylation of cresols
Assignee: Gulf Research and Development Co
•
Filing: 1962-12-19
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Granted: 1966-11-08
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Expires: 1982-12-19
Abstract
No abstract record available.
Inventors
- 👤 Dedinas Jonas
- 👤 Alfred M Henke
- 👤 William C Offutt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:20
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/50
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
41 words
A PROCESS FOR CONVERTING A CRESOL WHICH COMPRISES REACTING A CRESOL WITH AT LEAST ABOUT ONE MOL PER MOL THEREOF OF HYDROGEN AT A TEMPERATURE OF ABOUT 900* TO ABOUT 1600* F., AT A SPACE VELOCITY OF ABOUT 0.2 TO ABOUT
Claim 2
Dependent Claim
41 words
A PROCESS FOR CONVERTING A CRESOL WHICH COMPRISES REACTING A CRESOL WITH AT LEAST ABOUT ONE MOL PER MOL THEREOF OF HYDROGEN AT A TEMPERATURE OF ABOUT 900* TO ABOUT 1600* F., AT A SPACE VELOCITY OF ABOUT 0.2 TO ABOUT
Claim 3
Dependent Claim
26 words
5, TERMINATING SAID REACTION WHEN ABOUT 88 TO ABOUT 92 MOL PERCENT OF SAID CRESOL HAS BEEN CONVERTED AND THEREAFTER RECOVERING PHENOL FROM THE REACTION PRODUCT.
Claim 4
Dependent Claim
26 words
5, TERMINATING SAID REACTION WHEN ABOUT 88 TO ABOUT 92 MOL PERCENT OF SAID CRESOL HAS BEEN CONVERTED AND THEREAFTER RECOVERING PHENOL FROM THE REACTION PRODUCT.
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) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |