US2756647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of incorporating quaternary ammonium compounds in paper
Assignee: Personal Products Co
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Filing: 1952-07-11
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Granted: 1956-07-31
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Expires: 1972-07-11
Abstract
No abstract record available.
Inventors
- 👤 Laurence P Thompson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:48
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/36; D21H17/00; D21H17/03; D21H17/05; D21H17/07; D21H23/00; D21H23/02; D21H23/22; D21H23/50; D21H5/00; D21H5/0005; D21H5/0047
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
46 words
IN THE PROCESS OF APPLYING HEAVY CATIONIC QUATERNARY AMMONIUM COMPOUNDS TO TISSUE DURING THE PAPER-MAKING PROCESS, THE STEPS OF FORCE SPRAYING IN ATOMIZED FORM A DILUTE METERED AQUEOUS SOLUTION OF THE CATIONIC MATERIAL INTO THE MOIST TISSUE AT ELEVATED TEMPERATURE WITHIN A CONFINED RELATIVELY NARROW AREA.
References Cited (Backward Citations)
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US2186134A
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US2295504A
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US2320883A
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US2423262A
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US2634229A
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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) | 1959-07-31 | 1960-01-30 | 1960-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-31 | 1964-01-30 | 1964-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-31 | 1968-01-30 | 1968-07-31 | $7700.00 | Window Closed / Lapsed |