Patent US2525789A successfully refreshed from Google Patents.
US2525789A
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Staining method of detecting hidden weevil infestation in grains
Assignee: Individual
•
Filing: 1949-05-17
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Granted: 1950-10-17
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Expires: 1969-05-17
Abstract
No abstract record available.
Inventors
- 👤 Justus C Frankenfeld
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:24
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/02; G01N33/10; Y; Y10; Y10S; Y10S47/00; Y10S47/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A METHOD OF TREATING GRAIN TO DETECT HIDDEN WEEVIL INFESTATION THEREIN AS EVIDENCED BY THE PRESENCE OF WEEVIL EGG-PLUGS, COMPRISING COMPLETELY IMMERSING THE GRAIN IN A SOLUTION CONTAINING A DYE HAVING AN AFFINITY FOR THE EGG-PLUGS FOR A SHORT PERIOD OF TIME, SEPARATING THE RESULTING TREATED GRAIN FROM THE DYE SOLUTION, AND WASHING THE TREATED GRAIN TO REMOVE THE EXCESS OF THE DYE SOLUTION, SAID WASHED GRAIN HAVING THE EGG-PLUGS, IF PRESENT, STAINED A DEEP, DARK COLOR WHICH IS CHARACTERISTICOF THE DYE USED.
Claim 2
Independent Claim
83 words
A METHOD OF TREATING GRAIN TO DETECT HIDDEN WEEVIL INFESTATION THEREIN AS EVIDENCED BY THE PRESENCE OF WEEVIL EGG-PLUGS, COMPRISING COMPLETELY IMMERSING THE GRAIN IN A SOLUTION CONTAINING A DYE HAVING AN AFFINITY FOR THE EGG-PLUGS FOR A SHORT PERIOD OF TIME, SEPARATING THE RESULTING TREATED GRAIN FROM THE DYE SOLUTION, AND WASHING THE TREATED GRAIN TO REMOVE THE EXCESS OF THE DYE SOLUTION, SAID WASHED GRAIN HAVING THE EGG-PLUGS, IF PRESENT, STAINED A DEEP, DARK COLOR WHICH IS CHARACTERISTICOF THE DYE USED.
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) | 1953-10-16 | 1954-04-17 | 1954-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-16 | 1958-04-17 | 1958-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-16 | 1962-04-17 | 1962-10-17 | $7700.00 | Window Closed / Lapsed |