US3147299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making diphosphonates
Assignee: Dow Chemical Co
•
Filing: 1962-07-26
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Granted: 1964-09-01
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Expires: 1982-07-26
Abstract
No abstract record available.
Inventors
- 👤 John C Smith
- 👤 Brad H Miles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:47
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/0014; C08J9/0038; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/141; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/52; C08J2375/00; C08J2375/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
THE PROCESS FOR MAKING A BIS(HALOALKYL PHSOPHONATE) HAVING THE FORMULA
Claim 2
Dependent Claim
10 words
THE PROCESS FOR MAKING A BIS(HALOALKYL PHSOPHONATE) HAVING THE FORMULA
References Cited (Backward Citations)
US2841608A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |