US3102064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel paper sizing process
Assignee: Ingredion Inc
•
Filing: 1961-09-08
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Granted: 1963-08-27
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Expires: 1981-09-08
Abstract
No abstract record available.
Inventors
- 👤 Otto B Wurzburg
- 👤 Emil D Mazzarella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:00
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/03; D21H17/05; D21H17/14; D21H17/15; D21H17/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
THE METHOD OF SIZING PAPER WHICH COMPRISES THE STEP OF INTIMATELY DISPERSING WITHIN THE WET PULP, PRIOR TO THE ULTIMATE CONVERSION OF SAID PULP INTO A DRY WEB, A SIZING AGENT WHICH COMPRISES A CYCLIC DICARBOXYLIC ACID ANHYDRIDE CORRESPONDING TO THE STRUCTURAL FORMULA
Claim 2
Independent Claim
43 words
THE METHOD OF SIZING PAPER WHICH COMPRISES THE STEP OF INTIMATELY DISPERSING WITHIN THE WET PULP, PRIOR TO THE ULTIMATE CONVERSION OF SAID PULP INTO A DRY WEB, A SIZING AGENT WHICH COMPRISES A CYCLIC DICARBOXYLIC ACID ANHYDRIDE CORRESPONDING TO THE STRUCTURAL FORMULA
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) | 1966-08-26 | 1967-02-25 | 1967-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-26 | 1971-02-25 | 1971-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-26 | 1975-02-25 | 1975-08-27 | $7700.00 | Window Closed / Lapsed |