Patent US3400000A successfully refreshed from Google Patents.
US3400000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface modified electrostatic enamel powders and method
Assignee: EIDP Inc
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Filing: 1965-05-17
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Granted: 1968-09-03
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Expires: 1985-05-17
Abstract
No abstract record available.
Inventors
- 👤 Lewis C Hoffman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:08
CPC Classifications
C; C23; C23D; C23D5/00; C23D5/04; C03; C03C; C03C4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
A POWDER FROM THE GROUP CONSISTING OF LEAD BOROSILICATE FRIT POWDERS AND ENAMEL POWDERS THE PARTICLES OF WHICH ARE COMPOSITES OF A LEAD BOROSILICATE FRIT AND A REFRACTORY PIGMENT, SAID POWDER HAVING BEEN MODIFIED TO IMPROVE ITS ELECTROSTATIC TRANSFER PROPERTIES BY UNIFORMLY CONTACTING THE POWDER WITH SUCH AN AMOUNT OF A HYDROCARBYL SILICON HALIDE AS WILL THEORETICALLY COVER 10 TO 70% OF THE POWDER SURFACE, SAID HYDROCARBYL SILICON HALIDE HAVING THE FORMULA R3SIX WHEREIN X IS A HALOGEN OF THE GROUP CONSISTING OF CHLORINE AND BROMINE, AND EACH R, CONSIDERED INDIVIDUALLY, IS FROM THE GROUP CONSISTING OF CHLORINE, BROMINE, 1 TO 6 CARBON ALIPHATIC HYDROCARBYL RADICALS, 6 TO 9 CARBON ARYL HYDROCARBYL RADICALS, AND 6 TO 9 CARBON ARALKYL HYDROCARBYL RADICALS, WITH THE PROVISO THAT AT LEAST ONE OF SAID R''S IS A HYDROCARBYL RADICAL.
Claim 2
Dependent Claim
135 words
A POWDER FROM THE GROUP CONSISTING OF LEAD BOROSILICATE FRIT POWDERS AND ENAMEL POWDERS THE PARTICLES OF WHICH ARE COMPOSITES OF A LEAD BOROSILICATE FRIT AND A REFRACTORY PIGMENT, SAID POWDER HAVING BEEN MODIFIED TO IMPROVE ITS ELECTROSTATIC TRANSFER PROPERTIES BY UNIFORMLY CONTACTING THE POWDER WITH SUCH AN AMOUNT OF A HYDROCARBYL SILICON HALIDE AS WILL THEORETICALLY COVER 10 TO 70% OF THE POWDER SURFACE, SAID HYDROCARBYL SILICON HALIDE HAVING THE FORMULA R3SIX WHEREIN X IS A HALOGEN OF THE GROUP CONSISTING OF CHLORINE AND BROMINE, AND EACH R, CONSIDERED INDIVIDUALLY, IS FROM THE GROUP CONSISTING OF CHLORINE, BROMINE, 1 TO 6 CARBON ALIPHATIC HYDROCARBYL RADICALS, 6 TO 9 CARBON ARYL HYDROCARBYL RADICALS, AND 6 TO 9 CARBON ARALKYL HYDROCARBYL RADICALS, WITH THE PROVISO THAT AT LEAST ONE OF SAID R''S IS A HYDROCARBYL RADICAL.
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) | 1971-09-03 | 1972-03-04 | 1972-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-03 | 1976-03-04 | 1976-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-03 | 1980-03-04 | 1980-09-03 | $7700.00 | Window Closed / Lapsed |