Method and product for applying skin treatments and ointments

• US 5,753,244 A
• Filed: 12/06/1996
• Issued: 05/19/1998
• Est. Priority Date: 05/09/1994
• Status: Expired due to Fees

• Current Assignee: Kralik, Michael, Taylor W. Reynolds
• Original Assignee: Kralik, Michael, Taylor W. Reynolds
• Inventors: Kralik, Michael, Reynolds, Taylor W.
• Primary Examiner(s): Dodson, Shelley A.
• Application Number:
  US08/761,386
• Time in Patent Office: 529 Days
• Field of Search: 424/59, 424/60, 424/400, 424/401, 424/70.1
• US Class Current: 424/401
• CPC Class Codes: A61K 2800/412 Microsized, i.e. having sizes between 0.1 and 100 microns
• CPC Class Codes: A61K 2800/45 Colour indicators, e.g. pH- or Redox indicators
• CPC Class Codes: A61K 2800/75 Anti-irritant
• CPC Class Codes: A61K 47/22 Heterocyclic compounds, e.g. ascorbic acid, tocopherol or pyrrolidones
• CPC Class Codes: A61K 8/11 Encapsulated compositions
• CPC Class Codes: A61K 8/4973 with oxygen as the only hetero atom
• CPC Class Codes: A61Q 17/04 Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
• CPC Class Codes: A61Q 19/00 Preparations for care of the skin

Abstract

A method for producing and a product comprising adding an encapsulated color disappearing or color changing indicator to a topical skin lotion, spray, or other similar skin product.

Claims

1. A method for manufacturing skin treatment products, ointments, sunblock, topical anesthetics, and drugs comprising:

admixing with the skin treatment product, ointment, sunblock, topical anaesthetic, and drugs,

i. an indicator which changes color or becomes transparent upon release and exposure to the air, heat, lights or skin acidity, encapsulated in a time delayed decomposable coating of a thickness selected to time delay release of said indicator to change color or become transparent after a desired time period;

ii. said indicator and decomposable coating of a chemical composition and concentration which do not react with or irritate the skin.

2. A method for manufacturing skin treatment products, ointments, sunblock, topical anesthetics, and drugs according to claim 1, wherein the indicator is a pH indicator.

3. A method for manufacturing skin treatment products, ointments, sunblock, topical anesthetics, and drugs according to claim 1, including an encapsulated indicator reactive reagent in a time delayed decomposable coating which changes the color or transparency of the indicator upon release and contact with the indicator, said indicator and reagent of a chemical composition and concentration which do not react with or irritate the skin.

4. A method for manufacturing skin treatment products, ointments, sunblock, topical anesthetics, and drugs according to claim 1, wherein the encapsulating coating comprises an inner polysaccharide matrix and an outer polypeptide shell.

5. A product comprising a skin treatment product, ointment, sunblock, topical disinfectant, anaesthetic, and drug, prepared in accordance with claim 1.

6. A method according to claim 3, wherein the disappearing indicator is quinoline blue, and the reagent is an alpha hydroxyacid selected from the group comprising glycolic, lactic, citric, and lactic acids encapsulated in a polypeptid millicapsule shell of desired thickness.

7. A method for manufacturing skin treatment products, ointments, sunblock, topical anesthetics, according to claim 1, wherein:

the indicator is an effective amount of heat responsive composition selected from the group comprising (NR_x H_4-x)₂ NiCL₄, where x=1, 2, 3, and NR₁,2,3 H_4-1,2,3)₂ NiCl₄, wherein R is a carbon moiety group which changes from yellow to brown or green to blue upon exposure to heat; and

carotene which changes from yellow to clear upon exposure to heat, and methyl red which changes from yellow to clear upon exposure to heat.

8. A product comprising a skin treatment product, ointment, sunblock, topical disinfectant, anaesthetic, and drug prepared in accordance with the method of claim 7.