US3595931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogenolysis of aromatic halides
Assignee: Gulf Research and Development Co
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Filing: 1968-05-28
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Granted: 1971-07-27
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Expires: 1988-05-28
Abstract
Abstract A PROCESS IS PROVIDED FOR THE REPLACEMENT OF A HALOGEN MOIETY ON A HALOGENATED AROMATIC WITH A HYDROGEN. THE PROCESS INVOLVES CONTACTING THE HALOGENATED AROMATIC IN THE VAPOR PHASE IN THE PRESENCE OF HYDROGEN WITH A SUPPORTED CATALYST CONTAINIG A MINOR AMOUNT OF PT OR PD AND A MINOR AMOUNT OF A HYDRATED ALKALI OR ALKALINE EARTH METAL OXIDE SUCH AS KOH.
Inventors
- 👤 Russell G Hay
- 👤 John G Mcnulty
- 👤 William L Walsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 04:30
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/38; B01J23/54; B01J23/56; B01J23/58; C; C07; C07C; C07C1/00; C07C1/26; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/02; C07C2523/04; C07C2523/38; C07C2523/40; C07C2523/42; C07C2523/44; C07C2523/54; C07C2523/56; C07C2523/58
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |