US3369918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Development of latent electrostatic images with crested waves of liquid developer
Assignee: Xerox Corp
•
Filing: 1966-07-13
•
Granted: 1968-02-20
•
Expires: 1986-07-13
Abstract
No abstract record available.
Inventors
- 👤 James E Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:43
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/10; G03G15/101
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
74 words
A METHOD FOR DEVELOPMENT OF LATENT ELECTROSTATIC IMAGES BY CONTACT WITH FLOWING LIQUID DEVELOPER CONTAINING SUSPENDED PARTICULATE MATERIALL COMPRISING FORMING THE SURFACE OF SAID FLOWING DEVELOPER INTO TIME-INDEPENDENT WAVES, PROVIDING CONTINUOUS AGITATION TO SAID FLOWING DEVELOPER TO MAINTAIN UNIFORM SUSPENSION OF THE PARTICULATE MATTER CONTAINED THEREIN, AND MOVING A LATENT ELECTROSTATIC IMAGE BEARING SURFACE ACROSS SAID DEVELOPER SURFACE SO THAT SAID IMAGE-BEARING SURFACE INTERCEPTS SAID DEVELOPER SURFACE ONLY AT THE CRESTS OF SAID WAVES.
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) | 1971-02-19 | 1971-08-21 | 1972-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-19 | 1975-08-21 | 1976-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-19 | 1979-08-21 | 1980-02-20 | $7700.00 | Window Closed / Lapsed |