US1489009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the expulsion of volatile substances by means of streaming vapors
Assignee: Hoechst AG
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Filing: 1924-02-14
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Granted: 1924-04-01
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Expires: 1944-02-14
Abstract
No abstract record available.
Inventors
- 👤 Rohmer Martin
- 👤 Blumrich Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:32
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/14; B01D1/28; Y; Y10; Y10S; Y10S203/00; Y10S203/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1927-04-01 | 1927-10-01 | 1928-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-04-01 | 1931-10-01 | 1932-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-04-01 | 1935-10-01 | 1936-04-01 | $7700.00 | Window Closed / Lapsed |