Patent US3895474A successfully refreshed from Google Patents.
US3895474A
Expired / Lapsed
US
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Process for preparing pre-moistened antimicrobial towels
Assignee: Pfizer Inc
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Filing: 1973-11-16
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Granted: 1975-07-22
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Expires: 1993-11-16
Abstract
Abstract A process for the preparation of pre-moistened antimicrobial towels is disclosed.
Inventors
- 👤 Stuart M Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:39
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/00987; A61F13/00991
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
91 words
A process for preparing pre-moistened antimicrobial towels which comprises the steps of coating paper or fabric sheet in strip form with a solution of antimicrobial agent in a volatile vehicle; permitting at least a portion of said vehicle to evaporate; longitudinally folding said coated sheet; transversely perforating said coated sheet into separable towel segments; transversely folding said perforated sheet; arranging said folded and perforated sheet in stack form in a moisture-impervious container; moistening said stack with aqueous liquid; and enclosing said moistened stack with a moisture-impervious cover seal on said container.
Claim 2
Dependent Claim
91 words
A process for preparing pre-moistened antimicrobial towels which comprises the steps of coating paper or fabric sheet in strip form with a solution of antimicrobial agent in a volatile vehicle; permitting at least a portion of said vehicle to evaporate; longitudinally folding said coated sheet; transversely perforating said coated sheet into separable towel segments; transversely folding said perforated sheet; arranging said folded and perforated sheet in stack form in a moisture-impervious container; moistening said stack with aqueous liquid; and enclosing said moistened stack with a moisture-impervious cover seal on said container.
Claim 3
Dependent Claim
13 words
The process of claim 1 wherein said coating is effected by gravure printing.
Claim 4
Dependent Claim
14 words
The process of claim 1 wherein said antimicrobial agent is a quaternary ammonium compound.
Claim 5
Dependent Claim
13 words
The process of claim 3 wherein said quaternary ammonium compound is benzalkonium chloride.
Claim 6
Dependent Claim
10 words
The process of claim 1 wherein said sheet is paper.
Claim 7
Dependent Claim
11 words
The process of claim 1 wherein said sheet is non-woven hemp.
References Cited (Backward Citations)
US3481099A
Cited
US3786615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |