US3028296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous sheet material
Assignee: Primerica Inc
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Filing: 1958-10-20
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Granted: 1962-04-03
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Expires: 1978-10-20
Abstract
No abstract record available.
Inventors
- 👤 James W Adams
- 👤 Leo J Bernardin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:35
CPC Classifications
D; D21; D21H; D21H13/00; D21H13/10; D21H13/12; D21H13/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
PAPER SHEET MATERIAL OF IMPROVED BURST AND TEAR STRENGTH COMPRISING A BLEND OF PAPERMAKING CELLULOSE PULP FIBERS AND A MINOR AMOUNT OF POLYVINYL ALCOHOL FIBERS.
Claim 2
Dependent Claim
25 words
PAPER SHEET MATERIAL OF IMPROVED BURST AND TEAR STRENGTH COMPRISING A BLEND OF PAPERMAKING CELLULOSE PULP FIBERS AND A MINOR AMOUNT OF POLYVINYL ALCOHOL FIBERS.
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) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |