US3313795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating a liquid containing dissolved proteinaceous constituents
Assignee: Purac AB
•
Filing: 1965-03-01
•
Granted: 1967-04-11
•
Expires: 1985-03-01
Abstract
No abstract record available.
Inventors
- 👤 Rubin Ernst Arne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:18
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/24; B; B03; B03D; B03D1/00; B03D1/14; B03D1/1443; B03D1/1462; B03D1/24; B03D2203/00; B03D2203/001; Y; Y10; Y10S; Y10S530/00; Y10S530/859
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A METHOD OF TREATING A WEAKLY ACID LIQUID CONTAINING A DISSOLVED PROTEINACEOUS MATERIAL WHICH COMPRISES ADDING A STRONGLY CATIONIC MATERIAL WHICH PRECIPITATES A PART OF SAID PROTEINACEOUS MATERIAL TO SAID LIQUID, INTRODUCING AIR BUBBLES INTO THE RESULTING MIXTURES AND THEREBY FLOATING THE PRECIPITATED PROTEINACEOUS MATERIAL TO THE SURFACE OF THE LIQUID, MECHANICALLY SEAPRATIANG THE RESULTING FLOATED MATERIAL FROM THE LIQUID, ADDING A BASIC SUBSTANCE TO THE LIQUID IN QUANTITY SUFFICIENT TO RAISE ITS PH VALUE
Claim 2
Independent Claim
75 words
A METHOD OF TREATING A WEAKLY ACID LIQUID CONTAINING A DISSOLVED PROTEINACEOUS MATERIAL WHICH COMPRISES ADDING A STRONGLY CATIONIC MATERIAL WHICH PRECIPITATES A PART OF SAID PROTEINACEOUS MATERIAL TO SAID LIQUID, INTRODUCING AIR BUBBLES INTO THE RESULTING MIXTURES AND THEREBY FLOATING THE PRECIPITATED PROTEINACEOUS MATERIAL TO THE SURFACE OF THE LIQUID, MECHANICALLY SEAPRATIANG THE RESULTING FLOATED MATERIAL FROM THE LIQUID, ADDING A BASIC SUBSTANCE TO THE LIQUID IN QUANTITY SUFFICIENT TO RAISE ITS PH VALUE
References Cited (Backward Citations)
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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) | 1970-04-10 | 1970-10-10 | 1971-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-10 | 1974-10-10 | 1975-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-10 | 1978-10-10 | 1979-04-11 | $7700.00 | Window Closed / Lapsed |