US2957931A
Expired / Lapsed
US
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Synthesis of compounds having a carbonphosphorus linkage
Assignee: ExxonMobil Oil Corp
•
Filing: 1949-07-28
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Granted: 1960-10-25
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Expires: 1969-07-28
Abstract
No abstract record available.
Inventors
- 👤 Lyle A Hamilton
- 👤 Robert H Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:06
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/167; C23F11/1676; B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/014; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/30; C07F9/32; C07F9/3205; C07F9/3229; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006; C07F9/48; C07F9/50; C07F9/505; C07F9/5059; C07F9/53
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
AN ORGANIC PROSPHORUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF (1) A COMPOUND HAVING THE FORMULA:
Claim 2
Dependent Claim
16 words
AN ORGANIC PROSPHORUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF (1) A COMPOUND HAVING THE FORMULA:
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) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |