US3552990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Correction material having metallic additive
Assignee: Individual
•
Filing: 1967-04-03
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Granted: 1971-01-05
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Expires: 1987-04-03
Abstract
Abstract A CORRECTION MATERIAL FOR USE IN MASKING ERRONEOUSLY TYPED IMPRESSIONS COMPRISING A SHEET OF PAPER HAVING A COATING OF A PIGMENT CONTAINING TITANIUM DIOXIDE AND MAGNESIUM SILICATE TOGETHER WITH A BINDER OF VINYL CHLORIDE-VINYL ACETATE COPOLYMER. AN ADDITIVE OF ALUMINUM GIVES UNEXPECTED RESULTS. THE PIGMENT AND ADDITIVE ARE MIXED IN A SOLUTION OF METHYL-EHTYL-KETONE AND TOLUENE AND THE BINDER.
Inventors
- 👤 Victor Barouh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:26
CPC Classifications
B; B41; B41J; B41J29/00; B41J29/26; B41J29/36; B41J29/367; B41M; B41M5/00; B41M5/10; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31906
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |