US2798673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for treating mica
Assignee: KUNZ AG
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Filing: 1956-03-23
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Granted: 1957-07-09
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Expires: 1976-03-23
Abstract
No abstract record available.
Inventors
- 👤 Eric C Kunz
- 👤 Ensminger Dale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:29
CPC Classifications
B; B28; B28D; B28D1/00; B28D1/32; B28D1/322; B02; B02C; B02C19/00; B02C19/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A METHOD OF DELAMINATING AND REDUCTING THE PARTICLE SIZE OF MICA COMPRISING THE STEPS OF SUSPENDING THE MICA PARTICLES IN WATER, MAINTAINING THE WATER/MICA RATIO IN THE RANGE FROM 1:1 TO 10:1, SUBJECTING THE SUSPENSION TO ULTRASONIC VIBRATIONS IN THE RANGE FROM 15 KILOCYCLES TO 1 MEGACYCLE PER SECOND WHILE MAINTAINING THE PARTICLES
Claim 2
Independent Claim
53 words
A METHOD OF DELAMINATING AND REDUCTING THE PARTICLE SIZE OF MICA COMPRISING THE STEPS OF SUSPENDING THE MICA PARTICLES IN WATER, MAINTAINING THE WATER/MICA RATIO IN THE RANGE FROM 1:1 TO 10:1, SUBJECTING THE SUSPENSION TO ULTRASONIC VIBRATIONS IN THE RANGE FROM 15 KILOCYCLES TO 1 MEGACYCLE PER SECOND WHILE MAINTAINING THE PARTICLES
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) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |