Patent US2678330A successfully refreshed from Google Patents.
US2678330A
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Bis-(2,3-dihalopropyl) chlorophosphonate
Assignee: Celanese Corp
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Filing: 1951-02-23
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Granted: 1954-05-11
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Expires: 1971-02-23
Abstract
No abstract record available.
Inventors
- 👤 Norman Van Gorder
- 👤 Walter D Paist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:28
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/14; D; D06; D06M; D06M13/00; D06M13/244; D06M13/282; D06M13/288
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A PHOSPHONATE OF THE GROUP CONSISTING OF BIS-(2,3-DICHLORPROPYL)-CHLOROPHOSPHONATE AND BIS-(2,3-DIBROMPROPYL)-CHLOROPHOSPHONATE.
Claim 2
Dependent Claim
10 words
A PHOSPHONATE OF THE GROUP CONSISTING OF BIS-(2,3-DICHLORPROPYL)-CHLOROPHOSPHONATE AND BIS-(2,3-DIBROMPROPYL)-CHLOROPHOSPHONATE.
References Cited (Backward Citations)
US1936985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-05-10 | 1957-11-09 | 1958-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-05-10 | 1961-11-09 | 1962-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-05-10 | 1965-11-09 | 1966-05-11 | $7700.00 | Window Closed / Lapsed |