Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Wearing apparel – fabric – or cloth
Reexamination Certificate
2008-04-29
2008-04-29
Dodson, Shelley A. (Department: 1616)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Wearing apparel, fabric, or cloth
Reexamination Certificate
active
07364746
ABSTRACT:
The invention relates to a liquid concentrate for the preservation of cosmetic and pharmaceutical products which comprises 3-iodo-2-propynyl butylcarbamate (IPBC), at least one liquid carrier selected from the group consisting of: polyvalent alcohols, glycol esters and glycol ethers, and at least one stabilizer selected from the group consisting of: formic acid, formic acid salts, and formate esters, and comprising no additional carboxylic acid selected from the group consisting of: benzoic acid, propionic acid, salicylic acid, sorbic acid, 4-hydroxybenzoic acid, dehydroacetic acid and 10-undecylenic acid and a salt thereof being present.
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European Search Report to EP 03 07 7431.
Rainer Gruening: “IPBC preservative combination systems for material protection”; Cosmetics and Toiletries, vol. 112, Apr. 1997, pp. 59-65, XP008024496.
Beilfuss Wolfgang
Gradtke Ralf
Hahn Gisela
Weber Klaus
Air Liquide Sante ( International)
Dodson Shelley A.
Young & Thompson
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