US3322863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aminoalkyl phosphonates and preparation thereof
Assignee: Dow Chemical Co
•
Filing: 1963-09-09
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Granted: 1967-05-30
•
Expires: 1983-09-09
Abstract
No abstract record available.
Inventors
- 👤 Warren J Rabourn
- 👤 Elvis E Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:45
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/50; C08G59/504; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006; C08G59/4007; C08G59/4071
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
32 words
A PROCESS FOR THE PREPARATION OF AMINOALKYL PHOSPHONATES WHICH COMPRISES REACTING AT A TEMPERATURE OF 5-65*C. STOICHIOMETRIC AMOUNTS OF A DI(LOWER ALKYL) ESTER OF PHOSPHONIC ACID AND AN IMIDAZOLIDINE OF THE FORMULA
Claim 4
Dependent Claim
32 words
A PROCESS FOR THE PREPARATION OF AMINOALKYL PHOSPHONATES WHICH COMPRISES REACTING AT A TEMPERATURE OF 5-65*C. STOICHIOMETRIC AMOUNTS OF A DI(LOWER ALKYL) ESTER OF PHOSPHONIC ACID AND AN IMIDAZOLIDINE OF THE FORMULA
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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) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |