US2865426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphate-impregnated integrated mica sheet
Assignee: Integrated Mica Corp
•
Filing: 1954-11-26
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Granted: 1958-12-23
•
Expires: 1974-11-26
Abstract
No abstract record available.
Inventors
- 👤 Moses D Heyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:34
CPC Classifications
C; C04; C04B; C04B28/00; C04B28/34; C04B28/342; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/268; Y10T428/29; Y10T428/2911
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A PHOSPHATE-IMPREGNATED MICA PRODUCT COMPRISING INTEGRATED MICA COMPOSED OF MICA FLAKES COHERED INTO AN INTEGRATED SHEET AND HAVING A MULTIPLICITY OF PORES AMONG THE FLAKES, A SILICA SKELETAL SHELL OCCUPYING THE PORES, AND CURED ORTHOPHOSPHORIC ACID IMPREGNATING THE SILICA SHELL.
Claim 2
Dependent Claim
40 words
A PHOSPHATE-IMPREGNATED MICA PRODUCT COMPRISING INTEGRATED MICA COMPOSED OF MICA FLAKES COHERED INTO AN INTEGRATED SHEET AND HAVING A MULTIPLICITY OF PORES AMONG THE FLAKES, A SILICA SKELETAL SHELL OCCUPYING THE PORES, AND CURED ORTHOPHOSPHORIC ACID IMPREGNATING THE SILICA SHELL.
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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) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |