US3471250A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of anhydrous inorganic metal halides and organic complexes thereof
Assignee: Dow Chemical Co
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Filing: 1967-04-18
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Granted: 1969-10-07
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Expires: 1987-04-18
Abstract
No abstract record available.
Inventors
- 👤 Horst G Langer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:29
CPC Classifications
C; C01; C01G; C01G19/00; C01G19/04; C01G19/06; C01F; C01F5/00; C01F5/26; C01F5/30; C01F5/34; C01F7/00; C01F7/48; C01F7/56; C01F7/58; C01G1/00; C01G1/06; C01G19/003; C01G37/00; C01G37/003; C01G37/04; C01G49/00; C01G49/0009; C01G49/10; C01G53/00; C01G53/01; C01G53/08; C01G53/09; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/28; C22B3/34; C22B3/38; C22B3/381; C22B3/382; C22B3/387; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3397216A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |