US3094049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Xerographic developer measuring apparatus
Assignee: Xerox Corp
•
Filing: 1961-02-03
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Granted: 1963-06-18
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Expires: 1981-02-03
Abstract
No abstract record available.
Inventors
- 👤 Snelling Christopher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:15
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0822; G03G15/0848; G03G15/0849; G03G15/0855; G03G15/0887; G03G15/0891
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A METHOD OF MEASURING CONCENTRATION OF ELECTROSCOPIC POWDER IN A MIXTURE WITH A CARRIER MEDIUM INCLUDING CONNECTING A BIAS POTENTIAL BETWEEN ISOLATED CONDUCTIVE LAYERS FORMED IN A PREDETERMINED PATTERN ON AN INSULATING SUPPORT, MOVING A QUANTITY OF MIXTURE ON SAID PATTERN TO ELECTROSTATICALLY DEPOSIT POWDER THEREON FROM THE MIXTURE, AND COMPARING THE PATTERN OF POWDER DEPOSITION TO A DEPOSITION PATTERN OF KNOWN POWDER CONCENTRATION.
Claim 2
Independent Claim
64 words
A METHOD OF MEASURING CONCENTRATION OF ELECTROSCOPIC POWDER IN A MIXTURE WITH A CARRIER MEDIUM INCLUDING CONNECTING A BIAS POTENTIAL BETWEEN ISOLATED CONDUCTIVE LAYERS FORMED IN A PREDETERMINED PATTERN ON AN INSULATING SUPPORT, MOVING A QUANTITY OF MIXTURE ON SAID PATTERN TO ELECTROSTATICALLY DEPOSIT POWDER THEREON FROM THE MIXTURE, AND COMPARING THE PATTERN OF POWDER DEPOSITION TO A DEPOSITION PATTERN OF KNOWN POWDER CONCENTRATION.
References Cited (Backward Citations)
US2956487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-17 | 1966-12-17 | 1967-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-17 | 1970-12-17 | 1971-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-17 | 1974-12-17 | 1975-06-18 | $7700.00 | Window Closed / Lapsed |