Patent US3668925A successfully refreshed from Google Patents.
US3668925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for detection of abnormal milk
Assignee: Johnson and Johnson
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Filing: 1970-04-20
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Granted: 1972-06-13
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Expires: 1990-04-20
Abstract
Abstract There is disclosed the method of filtering milk and detecting the existence of leukocytes in the milk, incidental to the filtration. This is accomplished by passing the milk through a filter element having a coarse, first fibrous filter zone which filters out gross impurities present in the milk and immediately thereafter passing the milk through a finer, following second fibrous filter zone of higher density than the first filter zone, and separating the filter element along an interface between the two zones and examining the inlet surface of the second filter zone to detect discoloration which is indicative of mastitis in the cows from which the milk is obtained.
Inventors
- 👤 Frederick K Mesek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:17
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/02; G01N33/04; A; A01; A01J; A01J5/00; A01J5/013; A01J5/0134
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A method of filtering milk and detecting milk which has been obtained from cows having mastitis comprising passing said milk through a filter element having a coarse first fibrous filter zone to filter out only gross impurities present in the milk, passing said milk through a finer following second fibrous filter zone of high density in the same filter element as said first filter zone, separating said filter element along the interface between the first and second filter zones to expose the inlet surface of said second filter zone, and then examining the inlet surface of sAid second filter zone to detect discoloration of the fibers of said second filter zone, which discoloration is indicative of mastitis.
Claim 2
Independent Claim
117 words
A method of filtering milk and detecting milk which has been obtained from cows having mastitis comprising passing said milk through a filter element having a coarse first fibrous filter zone to filter out only gross impurities present in the milk, passing said milk through a finer following second fibrous filter zone of high density in the same filter element as said first filter zone, separating said filter element along the interface between the first and second filter zones to expose the inlet surface of said second filter zone, and then examining the inlet surface of sAid second filter zone to detect discoloration of the fibers of said second filter zone, which discoloration is indicative of mastitis.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |