US3374256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Complex phosphorus salts
Assignee: Monsanto Research Corp
•
Filing: 1963-08-16
•
Granted: 1968-03-19
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Expires: 1983-08-16
Abstract
No abstract record available.
Inventors
- 👤 John S Driscoll
- 👤 Clifford N Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:33
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/26; C10L1/2608; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/535; C07F9/5352; C07F9/54; C07F9/5449; C08; C08F; C08F4/00; C08F4/06; C08K; C08K5/00; C08K5/49; C08K5/50; C08K5/51; C08K5/52; C08K5/524; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
34 words
A METHYLENE PHOPHONIUM HALLIDE COMPOUND SELECTED FROM THE CLASS CONSISTING OF PHOSPHONIUM METHYLENE PHOSPHORANE TRIHALIDES OF THE FORMULA R''C(P(R)3)22(X)3, METHYLENE DIPHOSPHONIUM TETRHALIDES OF THE FORMULA (R'')2C(PP(R)3)2(X)4, PHOSPHIUM METHYLENE PHOSPHORANE METAL HALIDES OF THE FORMULA
Claim 2
Dependent Claim
34 words
A METHYLENE PHOPHONIUM HALLIDE COMPOUND SELECTED FROM THE CLASS CONSISTING OF PHOSPHONIUM METHYLENE PHOSPHORANE TRIHALIDES OF THE FORMULA R''C(P(R)3)22(X)3, METHYLENE DIPHOSPHONIUM TETRHALIDES OF THE FORMULA (R'')2C(PP(R)3)2(X)4, PHOSPHIUM METHYLENE PHOSPHORANE METAL HALIDES OF THE FORMULA
Claim 3
Dependent Claim
71 words
METHODS OF FORMING A PHOSPHINIUM METHYLENE PHOSPHORANE METAL HALIDE, SELECTED FROM THE GROUP CONSISTING OF (1) CONTACTING A METAL HALIDE WITH A PHOSPHONIUM METHYLENE PHOSPHORANE HALIDE IN AN ORGANIC SOLVENT; (2) CONTACTING AN ELEMENTAL METAL WITH A METHYLEN BIS(PHOSPHONIUM HALIDE) IN AN ORGANIC SOLVENT; AND (3) CONTACTING AN ELEMENTAL METAL WITH A TRI-HYDROCARBYLPHOSPHINE AND A HYDROCARBYL POLYHALIDE; WHEREIN EACH SAID METAL IS METAL FORMING HALIDES HAVING BONDS OF PREDOMINANTLY COVALENT CHARACTER.
Claim 4
Dependent Claim
71 words
METHODS OF FORMING A PHOSPHINIUM METHYLENE PHOSPHORANE METAL HALIDE, SELECTED FROM THE GROUP CONSISTING OF (1) CONTACTING A METAL HALIDE WITH A PHOSPHONIUM METHYLENE PHOSPHORANE HALIDE IN AN ORGANIC SOLVENT; (2) CONTACTING AN ELEMENTAL METAL WITH A METHYLEN BIS(PHOSPHONIUM HALIDE) IN AN ORGANIC SOLVENT; AND (3) CONTACTING AN ELEMENTAL METAL WITH A TRI-HYDROCARBYLPHOSPHINE AND A HYDROCARBYL POLYHALIDE; WHEREIN EACH SAID METAL IS METAL FORMING HALIDES HAVING BONDS OF PREDOMINANTLY COVALENT CHARACTER.
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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) | 1971-03-19 | 1971-09-18 | 1972-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-19 | 1975-09-18 | 1976-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-19 | 1979-09-18 | 1980-03-19 | $7700.00 | Window Closed / Lapsed |