US2614055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating mica
Assignee: Samica Corp
•
Filing: 1948-05-10
•
Granted: 1952-10-14
•
Expires: 1968-05-10
Abstract
No abstract record available.
Inventors
- 👤 Senarclens Gerard De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:15
CPC Classifications
F; F16; F16L; F16L59/00; F16L59/04; C; C04; C04B; C04B14/00; C04B14/02; C04B14/04; C04B14/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
A METHOD FOR THE CONVERSION OF MICA, INITIALLY IN THE FORM OF SHEETS, SPLITTINGS AND THE LIKE, INTO A PULP SUITABLE FOR CONVERSION INTO SHEET FORM BY CONVENTIONAL PAPER MAKING METHODS AND ALSO FOR CONVERSION INTO MOLDED FORM, WHICH CONSISTS OF HEATING THE MICA TO A TEMPERATURE OF ABOUT 790-830* C., IMMERSING THE HEAT-TREATED MICA IN A SINGLE AQUEOUS MEDIUM WHICH IS A NON-SOLVENT THEREFOR, MAINTAINING SUCH IMMERSION IN SAID SINGLE AQUEOUS MEDIUM UNTIL CLEAVAGE OF THE MICA INTO FLAKE FORM IS ACCOMPLISHED, AND THEN DISINTEGRATING THE RESULTANT FLAKES BY SIMPLE AGITATION THEREOF IN SAID SINGLE AQUEOUS MEDIUM UNTIL A MICA PULP IS FORMED.
Claim 2
Independent Claim
104 words
A METHOD FOR THE CONVERSION OF MICA, INITIALLY IN THE FORM OF SHEETS, SPLITTINGS AND THE LIKE, INTO A PULP SUITABLE FOR CONVERSION INTO SHEET FORM BY CONVENTIONAL PAPER MAKING METHODS AND ALSO FOR CONVERSION INTO MOLDED FORM, WHICH CONSISTS OF HEATING THE MICA TO A TEMPERATURE OF ABOUT 790-830* C., IMMERSING THE HEAT-TREATED MICA IN A SINGLE AQUEOUS MEDIUM WHICH IS A NON-SOLVENT THEREFOR, MAINTAINING SUCH IMMERSION IN SAID SINGLE AQUEOUS MEDIUM UNTIL CLEAVAGE OF THE MICA INTO FLAKE FORM IS ACCOMPLISHED, AND THEN DISINTEGRATING THE RESULTANT FLAKES BY SIMPLE AGITATION THEREOF IN SAID SINGLE AQUEOUS MEDIUM UNTIL A MICA PULP IS FORMED.
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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) | 1955-10-14 | 1956-04-14 | 1956-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-14 | 1960-04-14 | 1960-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-14 | 1964-04-14 | 1964-10-14 | $7700.00 | Window Closed / Lapsed |