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US3889804A Expired / Lapsed US ⏱️ 0.0 years remaining

Disposable towel

Assignee: Gorham International Inc
•
Filing: 1973-03-14
•
Granted: 1975-06-17
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Expires: 1993-03-14
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Abstract

Abstract This invention relates to a disposable wet towel characterized by an ability to evolve heat immediately prior to use or in use such that the temperature of the towel is increased by as much as 25* or more above ambient when applied to the skin. The evolution of heat is due to the admixture of a reducing agent and an oxidizing agent reactive with said reducing agent which agents are kept separated prior to use of the towel and mixed when the towel is put into use. The agents and products resulting from the reaction thereof are not irritating to the skin. The invention also provides pouches for storing said towels prior to use which pouches contain means for maintaining said oxidizing agent and reducing agent isolated from each other.

Inventors

  • 👤 Leonard E Ravich

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 23:36
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/32; B65D81/3261; F; F24; F24V; F24V30/00; A; A47; A47K; A47K10/00; A47K10/24; A47K10/32; A47K2010/3266; A47K2010/3293; Y; Y10; Y10S; Y10S206/00; Y10S206/812

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 86 words
AN ARTICLE COMPRISING AN AIRTIGHT POUCH WHERE SAID POUCH IS DIVIDED INTO TWO CHAMBERS, EACH CONTAINING A TOWEL, THE TOWEL IN ONE OF SAID CHAMBERS BEING IMPREGNATED WITH A SOLUTION OF OXIDIZING AGENT AND THE TOWEL IN THE OTHER OF SAID CHAMBERS BEING IMPREGNATED WITH A SOLUTION OF REDUCING AGENT, WHEREUPON WITH RUPTURE OF SAID CHAMBERS, THE TWO TOWELS ARE BROUGHT TOGETHER CAUSING MIXING OF SAID OXIDIZING AGENT AND REDUCING AGENT TO CAUSE AN EXOTHERMIC REACTION AND A TEMPERATURE RISE IN SAID TOWELS ABOVE AMBIENT TEMPERATURE.
Claim 2
Dependent Claim 86 words
AN ARTICLE COMPRISING AN AIRTIGHT POUCH WHERE SAID POUCH IS DIVIDED INTO TWO CHAMBERS, EACH CONTAINING A TOWEL, THE TOWEL IN ONE OF SAID CHAMBERS BEING IMPREGNATED WITH A SOLUTION OF OXIDIZING AGENT AND THE TOWEL IN THE OTHER OF SAID CHAMBERS BEING IMPREGNATED WITH A SOLUTION OF REDUCING AGENT, WHEREUPON WITH RUPTURE OF SAID CHAMBERS, THE TWO TOWELS ARE BROUGHT TOGETHER CAUSING MIXING OF SAID OXIDIZING AGENT AND REDUCING AGENT TO CAUSE AN EXOTHERMIC REACTION AND A TEMPERATURE RISE IN SAID TOWELS ABOVE AMBIENT TEMPERATURE.
Claim 3
Dependent Claim 11 words
The article of claim 1 where said towel is of paper.
Claim 4
Dependent Claim 31 words
The article of claim 1 where the concentration of said oxidizing agent and reducing agent in solution is sufficient to provide a temperature rise in said towels of at least 25*F.
Claim 5
Dependent Claim 14 words
The article of claim 1 where said solution of oxidizing agent contains a stabilizer.
Claim 6
Dependent Claim 21 words
The article of claim 4 where said oxidizing agent is selected from the group of hydrogen peroxide and urea hydrogen peroxide.
Claim 7
Dependent Claim 12 words
The article of claim 4 where said oxidizing agent is a peroxide.
Claim 8
Dependent Claim 20 words
The article of claim 6 where the reducing agent is selected from the group of thiourea and a thiobarbituric acid.
Claim 9
Dependent Claim 13 words
The article of manufacture of claim 7 where said reducing agent is thiourea.

References Cited (Backward Citations)

US2779465A Cited
US3038473A Cited
US3343664A Cited
US3414927A Cited
US3638786A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-06-16 1978-12-16 1979-06-17 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-06-16 1982-12-16 1983-06-17 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-06-16 1986-12-16 1987-06-17 $7700.00 Window Closed / Lapsed

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