US3402210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of 1-naphthol
Assignee: Union Carbide Corp
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Filing: 1964-01-20
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Granted: 1968-09-17
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Expires: 1984-01-20
Abstract
No abstract record available.
Inventors
- 👤 Robert D Hiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:45
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/06; C07C37/07; B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/63; B01J27/00; B01J27/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
THE METHOD FOR PRODUCING 1-NAPHTHOL WHICH COMPRISES HEATING AT 250*C. TO 450*C. A MIXTURE OF HYDROGEN GAS AND 3,4-DIHYDRO-1-(2H)-HAPHTHALENEONE IN CONTACT WITH A CATALYST COMPOSITION CONSISTING ESSENTIALLY OF A SUPPORT MATERIAL, FROM 0.25 TO 5 WEIGHT PERCENT PLATINUM METAL AND FROM 0.25 TO 1.5 WEIGHT PERCENT NEODYMIUM IN THE FORM OF AN INORGANIC COMPOUND.
Claim 2
Independent Claim
54 words
THE METHOD FOR PRODUCING 1-NAPHTHOL WHICH COMPRISES HEATING AT 250*C. TO 450*C. A MIXTURE OF HYDROGEN GAS AND 3,4-DIHYDRO-1-(2H)-HAPHTHALENEONE IN CONTACT WITH A CATALYST COMPOSITION CONSISTING ESSENTIALLY OF A SUPPORT MATERIAL, FROM 0.25 TO 5 WEIGHT PERCENT PLATINUM METAL AND FROM 0.25 TO 1.5 WEIGHT PERCENT NEODYMIUM IN THE FORM OF AN INORGANIC COMPOUND.
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) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |