Patent US2839378A successfully refreshed from Google Patents.
US2839378A
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US
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Method of making metal flakes
Assignee: American Marietta Co
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Filing: 1955-04-15
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Granted: 1958-06-17
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Expires: 1975-04-15
Abstract
No abstract record available.
Inventors
- 👤 Walter R Mcadow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:56
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/02; B22F9/12; B22F9/04; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
THE METHOD OF PRODUCING TRANSPARENT MIRROR-FLAKES PARTICLES PARTICULARLY ADAPTED FOR USE AS METALLIZED FLAKES IN A METALLIZED COATING CONTAINING A FILM-FORMING MATERIAL. COMPRISING DEPOSITING A HIGH LIGHT-REFLECTING METAL IN A CONTINUOUS FILM HAVING A UNIFORM THICKNESS WITHIN THE RANGE OF ABOUT 3 MILLIONTHS OF AN INCH TO ABOUT 25 MILLIONTHS OF AN INCH ON A BASE COATED WITH A LAYER WHICH CAN BE SOFTENED OR DISSOLVED WHEN CONTACTED WITH A LIQUID INSERT TO SAID METAL, TREATING THE BASE WITH THE SAID METAL FILM THEREUPON WITH SAID INSART LIQUID TO RELEASE SAID METAL SAID METAL FILM FROM SAID BASE AND TO COMMINUTE THE RELEASE METAL FILM TO THEREBY PRODUCE FLAKES WHICH ARE TRANSPARENT IN VISIBLE LIGHT.
Claim 2
Independent Claim
115 words
THE METHOD OF PRODUCING TRANSPARENT MIRROR-FLAKES PARTICLES PARTICULARLY ADAPTED FOR USE AS METALLIZED FLAKES IN A METALLIZED COATING CONTAINING A FILM-FORMING MATERIAL. COMPRISING DEPOSITING A HIGH LIGHT-REFLECTING METAL IN A CONTINUOUS FILM HAVING A UNIFORM THICKNESS WITHIN THE RANGE OF ABOUT 3 MILLIONTHS OF AN INCH TO ABOUT 25 MILLIONTHS OF AN INCH ON A BASE COATED WITH A LAYER WHICH CAN BE SOFTENED OR DISSOLVED WHEN CONTACTED WITH A LIQUID INSERT TO SAID METAL, TREATING THE BASE WITH THE SAID METAL FILM THEREUPON WITH SAID INSART LIQUID TO RELEASE SAID METAL SAID METAL FILM FROM SAID BASE AND TO COMMINUTE THE RELEASE METAL FILM TO THEREBY PRODUCE FLAKES WHICH ARE TRANSPARENT IN VISIBLE LIGHT.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-16 | 1961-12-16 | 1962-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-16 | 1965-12-16 | 1966-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-16 | 1969-12-16 | 1970-06-17 | $7700.00 | Window Closed / Lapsed |