US3218268A
Expired / Lapsed
US
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Selective hydrogenation catalyst
Assignee: Chemetron Corp
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Filing: 1962-07-18
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Granted: 1965-11-16
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Expires: 1982-07-18
Abstract
No abstract record available.
Inventors
- 👤 Melvin R Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:05
CPC Classifications
B; B01; B01J; B01J23/00; B01J23/70; B01J23/89; B01J23/8933; B01J23/8993; C; C07; C07C; C07C5/00; C07C5/02; C07C5/08; C07C2521/00; C07C2521/02; C07C2521/04; C07C2523/00; C07C2523/02; C07C2523/16; C07C2523/24; C07C2523/26; C07C2523/38; C07C2523/40; C07C2523/44; C07C2523/70; C07C2523/72; C07C2523/89
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A CATALYST WHICH IS EFFECTIVE IN THE SELECTIVE HYDROGENATION OF ACETYLENIC TRIPLE BONDS IN THE PRESENCE OF CONJUGATED DOUBLE CONDS WHICH COMPRISES A PALLADIUMCOPPER-CHROMIUM CATALYST CONTAIING 20% TO 70% COPPER OXIDE AND 30% TO 80% CHROMIUM OXIDE PROMOTED WITH 0.04% TO 1% PALLADIUM DEPOSITED PREDOMINANTLY ON THE SURFACE THEREOF.
Claim 2
Dependent Claim
49 words
A CATALYST WHICH IS EFFECTIVE IN THE SELECTIVE HYDROGENATION OF ACETYLENIC TRIPLE BONDS IN THE PRESENCE OF CONJUGATED DOUBLE CONDS WHICH COMPRISES A PALLADIUMCOPPER-CHROMIUM CATALYST CONTAIING 20% TO 70% COPPER OXIDE AND 30% TO 80% CHROMIUM OXIDE PROMOTED WITH 0.04% TO 1% PALLADIUM DEPOSITED PREDOMINANTLY ON THE SURFACE THEREOF.
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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |