US2859110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for treatment of waste paper stock
Assignee: Fibreboard Paper Products Corp
•
Filing: 1956-03-26
•
Granted: 1958-11-04
•
Expires: 1976-03-26
Abstract
No abstract record available.
Inventors
- 👤 Marcus E Sanford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:44
CPC Classifications
D; D21; D21C; D21C5/00; D21C5/02; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE METHOD OF TREATING FIBER CONTAINING STOCK FOR THE PRODUCTION OF PAPER WHICH COMPRISES FORMING A THICKENED PULP OF SUCH STOCK, HEATING SUCH TICKENED PULP AT A TEMPERATURE SUFFICIENT TO DISPERSED WAX THEREIN BUT BELOW THE TEMPERATURE AT WHICH ASPHALT IS MELTED AND DISPERSED THEREIN, COMBING THE WAX DISPERSED THICKENED STOCK TO DEFIBRATE THE SAME BY FRICTION BETWEEN THE FIBERS WITHOUT EFFECTING SUBSTANTIAL BREAKING UP OF FOREIGN PARTICLES IN THE PULP, DILUTING THE THUS DEFIBRATED PULP TO PROVIDE AN AQUEOUS SUSPENSION THEREOF FROM WHICH SAID
Claim 2
Independent Claim
85 words
THE METHOD OF TREATING FIBER CONTAINING STOCK FOR THE PRODUCTION OF PAPER WHICH COMPRISES FORMING A THICKENED PULP OF SUCH STOCK, HEATING SUCH TICKENED PULP AT A TEMPERATURE SUFFICIENT TO DISPERSED WAX THEREIN BUT BELOW THE TEMPERATURE AT WHICH ASPHALT IS MELTED AND DISPERSED THEREIN, COMBING THE WAX DISPERSED THICKENED STOCK TO DEFIBRATE THE SAME BY FRICTION BETWEEN THE FIBERS WITHOUT EFFECTING SUBSTANTIAL BREAKING UP OF FOREIGN PARTICLES IN THE PULP, DILUTING THE THUS DEFIBRATED PULP TO PROVIDE AN AQUEOUS SUSPENSION THEREOF FROM WHICH SAID
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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) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |