US2924538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dense papers and process for preparing them
Assignee: Honeywell International Inc
•
Filing: 1956-04-16
•
Granted: 1960-02-09
•
Expires: 1976-04-16
Abstract
No abstract record available.
Inventors
- 👤 Alfred H Nadelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:13
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
A PROCESS FOR INCREASING THE DENSITY OF A HIGHLY HYDRATED, CHEMICAL-PULP PAPER, WHICH COMPRISES INCORPORATING INTO AND ONTO THE FIBRES THEREOF BETWEEN ABOUT 0.5% AND ABOUT 8% OF AN EMULSIFIABLE OXIDIZED POLYETHYLENE WAX HAVING AN OXYGEN CONTENT BETWEEN ABOUT 2% AND ABOUT 7% AN AVERAGE MOLECULAR WEIGHT BETWEEN ABOUT 1,000 AND ABOUT 5,000 AND THEREAFTER WET CALENDERING THE PAPER.
Claim 2
Dependent Claim
59 words
A PROCESS FOR INCREASING THE DENSITY OF A HIGHLY HYDRATED, CHEMICAL-PULP PAPER, WHICH COMPRISES INCORPORATING INTO AND ONTO THE FIBRES THEREOF BETWEEN ABOUT 0.5% AND ABOUT 8% OF AN EMULSIFIABLE OXIDIZED POLYETHYLENE WAX HAVING AN OXYGEN CONTENT BETWEEN ABOUT 2% AND ABOUT 7% AN AVERAGE MOLECULAR WEIGHT BETWEEN ABOUT 1,000 AND ABOUT 5,000 AND THEREAFTER WET CALENDERING THE PAPER.
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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) | 1963-02-08 | 1963-08-10 | 1964-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-08 | 1967-08-10 | 1968-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-08 | 1971-08-10 | 1972-02-09 | $7700.00 | Window Closed / Lapsed |