Patent US2825645A successfully refreshed from Google Patents.
US2825645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereotype mat
Assignee: Burgess Cellulose Co
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Filing: 1953-03-24
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Granted: 1958-03-04
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Expires: 1973-03-24
Abstract
No abstract record available.
Inventors
- 👤 Russell R Eichmeier
- 👤 Arlie W Schorger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:45
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/63; D21H17/67; B; B41; B41N; B41N11/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
125 words
A STEROTYPE DRY MAT CAPABLE OF UNDERGOING THE MOLDING AND CASTING OPERATIONS OF STRETOTYPING PROCEDURE, AND COMPRISED UNIFORMLY THROUGHOUT THE THICKNESS THEREOF OF A CO-FELTED MIXTURE OF CELLULOSE FIBERS AND DISCRETE PARTICLES OF A FILLER UNATTACHED TO EACH OTHER AND UNATTACHED TO SAID FIBERS, SAID FILLER BEING PRESENT I AN AMOUNT SUFFICIENT TO IMPART HIGH PLASTICITY TO SAID MAT WHEN MOIST AND CONTAINING AS AN ESSENTIAL CONSTITUENT A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF THE SYNTHETIC HYDROUS OXIDES OF SILICON, ALUMINUM AND CHROMIUM, AND MIXTURES THEREOF, THE AMOUNT OF HYDROUS OXIDE, EXCLUSIVE OF WATER OF HYDRATION, BEING BETWEEN ABOUT 1% TO ABOUT 35% OF THE COMBINED DRY WEIGHT OF THE FIBERS AND THE OXIDE, SAID STEREOTYPE MAT BEING CHARACTERIZED BY HIGH PLASTICITY WHEN MOIST.
Claim 2
Dependent Claim
125 words
A STEROTYPE DRY MAT CAPABLE OF UNDERGOING THE MOLDING AND CASTING OPERATIONS OF STRETOTYPING PROCEDURE, AND COMPRISED UNIFORMLY THROUGHOUT THE THICKNESS THEREOF OF A CO-FELTED MIXTURE OF CELLULOSE FIBERS AND DISCRETE PARTICLES OF A FILLER UNATTACHED TO EACH OTHER AND UNATTACHED TO SAID FIBERS, SAID FILLER BEING PRESENT I AN AMOUNT SUFFICIENT TO IMPART HIGH PLASTICITY TO SAID MAT WHEN MOIST AND CONTAINING AS AN ESSENTIAL CONSTITUENT A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF THE SYNTHETIC HYDROUS OXIDES OF SILICON, ALUMINUM AND CHROMIUM, AND MIXTURES THEREOF, THE AMOUNT OF HYDROUS OXIDE, EXCLUSIVE OF WATER OF HYDRATION, BEING BETWEEN ABOUT 1% TO ABOUT 35% OF THE COMBINED DRY WEIGHT OF THE FIBERS AND THE OXIDE, SAID STEREOTYPE MAT BEING CHARACTERIZED BY HIGH PLASTICITY WHEN MOIST.
References Cited (Backward Citations)
US1618875A
Cited
US1726151A
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US2108761A
Cited
US2297635A
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US2649388A
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US2739068A
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US2726164A
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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) | 1961-03-03 | 1961-09-02 | 1962-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-03 | 1965-09-02 | 1966-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-03 | 1969-09-02 | 1970-03-04 | $7700.00 | Window Closed / Lapsed |