US2974158A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of bi-heterocyclic phosphorus containing compounds
Assignee: Union Carbide Corp
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Filing: 1953-04-02
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Granted: 1961-03-07
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Expires: 1973-04-02
Abstract
No abstract record available.
Inventors
- 👤 William M Lanham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:16
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/6564; C07F9/6571; C07F9/6574; C07F9/65746; D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/292
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
PHOSPHROUS-CONTAINING COMPOUNDS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
6 words
PHOSPHROUS-CONTAINING COMPOUNDS OF THE GENERAL FORMULA
Claim 3
Dependent Claim
92 words
PROCESS WHICH COMPRISES REACTING A COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE UNSUBSTITUTED AND THE HETEROCYCLIC RING LOWER ALKYL-SUBSTITUTED 2-HALO-2OXO-1,3,2-DIOXAPHOSPHOLANES AND THE UNSUBSTITUTED AND THE HETEROCYCLIC RING LOWER ALKYL-SUBSTITUTED 2-HALO-2OXO-1,3,2-DIOXAPHOSPHORINANES WITH A DIFUNCTIONAL ORGANIC COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE ALKYLENE GLYCOLS HAVING UP TO 18 CARBONS ATOMS, THE POLYETHYLENE GLYCOLS HAVING UP TO 18 CARBON ATOMS, THE DIPROPYLENE GLYCOLS, THE DIHYDRIC PHENOLS, THE BIPHENOLS, AND THE DIPHENYLOLALKANES AND DITOLYLOALKANES HAVING 1 TO 10 CARBON ATOMS IN THE ALKANE GROUP, AND THE ALKALI METAL SALTS OF SAID DIFUNCTIONAL COMPOUNDS.
Claim 4
Dependent Claim
92 words
PROCESS WHICH COMPRISES REACTING A COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE UNSUBSTITUTED AND THE HETEROCYCLIC RING LOWER ALKYL-SUBSTITUTED 2-HALO-2OXO-1,3,2-DIOXAPHOSPHOLANES AND THE UNSUBSTITUTED AND THE HETEROCYCLIC RING LOWER ALKYL-SUBSTITUTED 2-HALO-2OXO-1,3,2-DIOXAPHOSPHORINANES WITH A DIFUNCTIONAL ORGANIC COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE ALKYLENE GLYCOLS HAVING UP TO 18 CARBONS ATOMS, THE POLYETHYLENE GLYCOLS HAVING UP TO 18 CARBON ATOMS, THE DIPROPYLENE GLYCOLS, THE DIHYDRIC PHENOLS, THE BIPHENOLS, AND THE DIPHENYLOLALKANES AND DITOLYLOALKANES HAVING 1 TO 10 CARBON ATOMS IN THE ALKANE GROUP, AND THE ALKALI METAL SALTS OF SAID DIFUNCTIONAL COMPOUNDS.
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) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |