US3001571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic mica flakes and structures
Assignee: 3M Co
•
Filing: 1957-08-05
•
Granted: 1961-09-26
•
Expires: 1977-08-05
Abstract
No abstract record available.
Inventors
- 👤 Robert A Hatch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:15
CPC Classifications
C; C04; C04B; C04B20/00; C04B20/10; C04B20/1055; C04B14/00; C04B14/02; C04B14/04; C04B14/20; C04B14/206; Y; Y10; Y10S; Y10S106/00; Y10S106/03; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249924; Y10T428/26; Y10T428/266; Y10T428/268
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
A METHOD OF FORMING EXTREMELY THIN DISCRETE FLEXIBLE PLATELETS OF SYNTHETIC FLUORINE MICA COMPRISING EXPOSING WATER-SWELLING SYNTHETIC TETRASILICIC FLUORINE MICA TO SUFFICIENT WATER TO PASS BY ABSORPTION INTO THE CRYSTALLINE STRUCTURE OF SAID MICA ALONG PLANES OF POTENTIAL BASAL CLEAVAGE THEREOF, TO THEREBY HYDRATE SAID MICA WITH SUFFICIENT WATER ABSORBED ALONG SAID PLANES OF POTENTIAL BASAL CLEAVAGE TO EFFECT SWELLING OF SAID MICA, AND THEN HEATING SAID HYDRATED MICA TO A TEMPERATURE IN THE RANGE OF ABOUT 300 TO 550*C., WHEREBY SAID WATER ABSORBED ALONG THE CLEAVAGE PLANES OF SAID MICA IS CONVERTED TO STEAM AND CAUSES EXFOLIATION OF SAID SYNTHETIC MICA ALONG SAID BASAL CLEAVAGE PLANES.
Claim 2
Independent Claim
107 words
A METHOD OF FORMING EXTREMELY THIN DISCRETE FLEXIBLE PLATELETS OF SYNTHETIC FLUORINE MICA COMPRISING EXPOSING WATER-SWELLING SYNTHETIC TETRASILICIC FLUORINE MICA TO SUFFICIENT WATER TO PASS BY ABSORPTION INTO THE CRYSTALLINE STRUCTURE OF SAID MICA ALONG PLANES OF POTENTIAL BASAL CLEAVAGE THEREOF, TO THEREBY HYDRATE SAID MICA WITH SUFFICIENT WATER ABSORBED ALONG SAID PLANES OF POTENTIAL BASAL CLEAVAGE TO EFFECT SWELLING OF SAID MICA, AND THEN HEATING SAID HYDRATED MICA TO A TEMPERATURE IN THE RANGE OF ABOUT 300 TO 550*C., WHEREBY SAID WATER ABSORBED ALONG THE CLEAVAGE PLANES OF SAID MICA IS CONVERTED TO STEAM AND CAUSES EXFOLIATION OF SAID SYNTHETIC MICA ALONG SAID BASAL CLEAVAGE PLANES.
References Cited (Backward Citations)
US1972390A
Cited
US2017904A
Cited
US2215295A
Cited
US2549880A
Cited
US2614055A
Cited
US2659412A
Cited
US2709158A
Cited
US2675853A
Cited
US2778713A
Cited
US2865426A
Cited
US2863720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-25 | 1965-03-27 | 1965-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-25 | 1969-03-27 | 1969-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-25 | 1973-03-27 | 1973-09-26 | $7700.00 | Window Closed / Lapsed |