Patent US3380931A successfully refreshed from Google Patents.
US3380931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidation catalysts
Assignee: Shell USA Inc
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Filing: 1960-01-12
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Granted: 1968-04-30
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Expires: 1980-01-12
Abstract
No abstract record available.
Inventors
- 👤 Lloyd B Ryland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:10
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/37; C07C45/39; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/28; B01J23/31; B01J23/32; B01J23/34; B01J27/00; B01J27/14; B01J27/186; B01J27/188; B01J27/19; B01J27/192; C07C45/33; C07C45/34; C07C45/35; C07C45/36; C07C45/38; C07C5/00; C07C5/42; C07C5/48; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582; Y10; Y10S; Y10S585/00; Y10S585/8995; Y10S585/906
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
78 words
AN OXIDATION CATALYST CONSISTING ESSENTIALLY OF AN OXIDE OF A METAL OF THE LEFT HAND COLUMN OF GROUP VI OF THE PERIODIC SYSTEM OF THE ELEMENTS, AN OXIDE OF BISMUTH IN AN AMOUNT CORRESPONDING TO FROM ABOUT 1 TO ABOUT 20 BISMUTH ATOMS PER 10 ATOMS OF SAID GROUP VI METAL, AND AN OXIDE OF ARSENIC IN AN AMOUNT CORRESPONDING TO FROM ABOUT 0.1 TO ABOUT 6 ATOMS OF ARSENIC PER 10 ATOMS OF SAID GROUP VI METAL.
Claim 2
Dependent Claim
78 words
AN OXIDATION CATALYST CONSISTING ESSENTIALLY OF AN OXIDE OF A METAL OF THE LEFT HAND COLUMN OF GROUP VI OF THE PERIODIC SYSTEM OF THE ELEMENTS, AN OXIDE OF BISMUTH IN AN AMOUNT CORRESPONDING TO FROM ABOUT 1 TO ABOUT 20 BISMUTH ATOMS PER 10 ATOMS OF SAID GROUP VI METAL, AND AN OXIDE OF ARSENIC IN AN AMOUNT CORRESPONDING TO FROM ABOUT 0.1 TO ABOUT 6 ATOMS OF ARSENIC PER 10 ATOMS OF SAID GROUP VI METAL.
Claim 3
Dependent Claim
45 words
AN OXIDATION CATALYST ACCORDING TO CLAIM 1 WHICH ALSO CONTAINS AN OXIDE OF AN ELEMENT SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS, BORON, SILICON, AND MIXTURES THEREOF, IN AN AMOUNT CORRESPONDING TO FROM 0.5 TO 5 ATOMS PER 10 ATOMS OF SAID GROUP VI METAL.
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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) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |