US3285849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for coagulating aqueous suspensions and composition for use therein
Assignee: Toyo Koatsu Industries Inc
•
Filing: 1962-08-10
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Granted: 1966-11-15
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Expires: 1982-08-10
Abstract
No abstract record available.
Inventors
- 👤 Watanabe Hiroshi
- 👤 Matsunaga Hideo
- 👤 Inoue Masao
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:34
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/52; C02F1/5263; C02F1/5236; C02F1/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
PROCESS FOR COAGULATING THE SUSPENDED MINUTE PARTICLES OF AN AQUEOUS SUSPENSION COMPRISING ADDING TO SAID SUSPENSION (1) THE REACTION PRODUCT OF A COMPOUND FROM THE CLASS CONSISTING OF SUBSTITUTED AND UNSUBSTITUTED POLYSACCHARIDES AND AN N-CONTAINING RESIN FROM THE CLASS CONSISTING OF UREA-FORMALDEHYDE RESINS, MELAMINE-FORMALDEHYDE FESINS AND MIXTURES THEREOF, AND (2) AN INORGANIC SALT IN RESPECTIVE AMOUNTS SUFFICIENT TO COAGULATE SAID PARTICLES.
Claim 2
Dependent Claim
61 words
PROCESS FOR COAGULATING THE SUSPENDED MINUTE PARTICLES OF AN AQUEOUS SUSPENSION COMPRISING ADDING TO SAID SUSPENSION (1) THE REACTION PRODUCT OF A COMPOUND FROM THE CLASS CONSISTING OF SUBSTITUTED AND UNSUBSTITUTED POLYSACCHARIDES AND AN N-CONTAINING RESIN FROM THE CLASS CONSISTING OF UREA-FORMALDEHYDE RESINS, MELAMINE-FORMALDEHYDE FESINS AND MIXTURES THEREOF, AND (2) AN INORGANIC SALT IN RESPECTIVE AMOUNTS SUFFICIENT TO COAGULATE SAID PARTICLES.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |