US3786615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing pre-moistened antimicrobial towels
Assignee: Pfizer Inc
•
Filing: 1972-11-13
•
Granted: 1974-01-22
•
Expires: 1992-11-13
Abstract
Abstract A process for the preparation of pre-moistened antimicrobial towels is disclosed.
Inventors
- 👤 S Bauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:16
CPC Classifications
A; A61; A61F; A61F13/00; A61F13/00987; A61F13/00991; Y; Y10; Y10S; Y10S206/00; Y10S206/812
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
83 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 said vehicle to evaporate; transversely perforating said coated sheet into separable towel segments; longitudinally and 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 moistureinpervious cover seal on said container.
Claim 2
Dependent Claim
83 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 said vehicle to evaporate; transversely perforating said coated sheet into separable towel segments; longitudinally and 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 moistureinpervious 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)
US3264188A
Cited
US3481099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |