Patent US2673520A successfully refreshed from Google Patents.
US2673520A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preventing offset of print from freshly printed papers
Assignee: Monsanto Chemicals Ltd
•
Filing: 1948-02-09
•
Granted: 1954-03-30
•
Expires: 1968-02-09
Abstract
No abstract record available.
Inventors
- 👤 Jr John P Bainbridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:08
CPC Classifications
B; B41; B41M; B41M7/00; B41M7/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
86 words
IN A METHOD OF PRINTING PAPER WHEREIN PAPER SHEETS ARE FED TO PRINTING MEANS AND THEN STACKED OR REWOUND INTO ROLLS, THE IMPROVEMENT WHICH COMPRISES TREATING THE FRESHLY PRINTED SHEET PRIOR TO STACKING OR REWINDING WITH A FINE MIST OR SPRAY CONSISTIG OF AN AQUEOUS LIQUID AND FINE DISCRETE PARTICLES OF SILICA SELECTED FORM THE GROUP CONSISTING OF COLLOIDAL SILICA PARTICLES HAVING A DIAMETER LESS THAN 1 MICRON AND SILICA AEROGEL PARTICLES, AT LEAST 50% OF SAID AEROGEL PARTICLES HAVING A DIAMETER LESS THAN 1 MICRON.
References Cited (Backward Citations)
US1731467A
Cited
US2114792A
Cited
US2275578A
Cited
US2235676A
Cited
US2306292A
Cited
US2317370A
Cited
US2354979A
Cited
US2480904A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |