Patent US3383316A successfully refreshed from Google Patents.
US3383316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid electrophotographic developer containing isocyanate compounds
Assignee: Research Laboratories of Australia Pty Ltd
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Filing: 1964-10-23
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Granted: 1968-05-14
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Expires: 1984-10-23
Abstract
No abstract record available.
Inventors
- 👤 Matkan Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:41
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/12; G03G9/135; G03G9/13; G03G9/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A LIQUID DEVELOPER FOR RENDERING VISIBLE ELECTROSTATIC PATTERNS COMPRISING AN ELECTRICALLY INSULATING CARRIER LIQUID HAVING A VOLUME RESISTIVITY IN EXCESS OF 10**9 OHM CM. AND A DIELECTRIC CONSTNAT OF LESS THAN 3 AND SUSPENDED IN SUCH CARRIER LIQUID A PARTICULATE TONER MATERIAL CAPABLE OF BEING ATTRACTED AND DEPOSITED ELECTROSTATICALLY, CHARACTERIZED IN THAT THE TONER CONSISTS ESSENTIALLY OF APRTICLES OF (1) A PIGMENT, (2) A POLYMERIC ISOCYANATE COMPOUND CONTAINING REPEATED UNITS OF THE FOLLOWING GENERAL STRUCTURE
Claim 2
Dependent Claim
75 words
A LIQUID DEVELOPER FOR RENDERING VISIBLE ELECTROSTATIC PATTERNS COMPRISING AN ELECTRICALLY INSULATING CARRIER LIQUID HAVING A VOLUME RESISTIVITY IN EXCESS OF 10**9 OHM CM. AND A DIELECTRIC CONSTNAT OF LESS THAN 3 AND SUSPENDED IN SUCH CARRIER LIQUID A PARTICULATE TONER MATERIAL CAPABLE OF BEING ATTRACTED AND DEPOSITED ELECTROSTATICALLY, CHARACTERIZED IN THAT THE TONER CONSISTS ESSENTIALLY OF APRTICLES OF (1) A PIGMENT, (2) A POLYMERIC ISOCYANATE COMPOUND CONTAINING REPEATED UNITS OF THE FOLLOWING GENERAL STRUCTURE
References Cited (Backward Citations)
US2907674A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |