US3247254A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Er saturated hydrocarbon
Assignee: —
•
Filing: —
•
Granted: 1966-04-19
•
Expires: 1983-04-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:54
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/27; C07C45/32; C07C45/33; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; C07C45/37; C07C45/38; C07C47/00; C07C47/02; C07C47/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A PROCESS OF MANUFACTURING FORMALDEHYDE COMPRISING REACTING TOGETHER A GASEOUS ADMIXTURE OF A LOWE SATURATED HYDROCARBON AND A MEMBER SELECTED FROM THE GROUP CONSISTING JOF GASES CONTAINING FREE OXYGEN AND FREE OXYGEN BY PASSING SAID MIXTURE THROUGH A FINELY DIVIDED PUMICE CATALYST, AND THEREAFTER THROUGH A METAL NETTING COMPOSED OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF PLATINUM, IRIDIUM, RHODIUM, SILVER, COPPER, AND ALLOYS THEREOF, SAID REACTION BEING CONDUCTED AT A TEMPERATURE OF ABOUT 400 TO 700*C., AND RECOVERING THE REACTION PRODUCTS CONTAINING FORMALDEHYDE THEREBY PRODUCED.
Claim 2
Dependent Claim
87 words
A PROCESS OF MANUFACTURING FORMALDEHYDE COMPRISING REACTING TOGETHER A GASEOUS ADMIXTURE OF A LOWE SATURATED HYDROCARBON AND A MEMBER SELECTED FROM THE GROUP CONSISTING JOF GASES CONTAINING FREE OXYGEN AND FREE OXYGEN BY PASSING SAID MIXTURE THROUGH A FINELY DIVIDED PUMICE CATALYST, AND THEREAFTER THROUGH A METAL NETTING COMPOSED OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF PLATINUM, IRIDIUM, RHODIUM, SILVER, COPPER, AND ALLOYS THEREOF, SAID REACTION BEING CONDUCTED AT A TEMPERATURE OF ABOUT 400 TO 700*C., AND RECOVERING THE REACTION PRODUCTS CONTAINING FORMALDEHYDE THEREBY PRODUCED.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |