US3528365A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for mechanically after-dehumidifying and further treating filter press cakes of pigment or dispersion dyes
Assignee: Hoechst AG
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Filing: 1969-03-03
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Granted: 1970-09-15
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Expires: 1989-03-03
Abstract
No abstract record available.
Inventors
- 👤 Karl-Hermann List
- 👤 Gerhard Noltner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:50
CPC Classifications
C; C09; C09C; C09C3/00; C09C3/04; C09C3/043; B; B01; B01D; B01D29/00; B01D29/11; B01D29/117; B01D29/118; B01D29/62; B01D29/64; B01D29/6469; B01D29/6476; B01D29/76; B01D29/80; B01D29/82; B01D29/828; B01F; B01F27/00; B01F27/80; B01F27/95; B01F27/953; C09B; C09B67/00; C09B67/0001; C09B67/0003; C09B67/0096; B01F27/05; B01F27/11; B01F27/114; B01F27/1143; B01F27/23; B01F27/232; B01F27/2324; C01; C01P; C01P2006/00; C01P2006/80; C01P2006/82
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) | 1973-09-14 | 1974-03-16 | 1974-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-14 | 1978-03-16 | 1978-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-14 | 1982-03-16 | 1982-09-15 | $7700.00 | Window Closed / Lapsed |