Patent US3408403A successfully refreshed from Google Patents.
US3408403A
Expired / Lapsed
US
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Method of producing a mixture of sulfides and mercaptans
Assignee: Phillips Petroleum Co
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Filing: 1964-12-16
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Granted: 1968-10-29
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Expires: 1984-12-16
Abstract
No abstract record available.
Inventors
- 👤 Paul F Warner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:23
CPC Classifications
C; C07; C07C; C07C319/00; C07C319/14; C07C319/16; C07C319/02; C07C319/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US3114776A
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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) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |