US4874361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for healing damaged skin
Assignee: OMP Inc
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Filing: 1986-12-29
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Granted: 1989-10-17
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Expires: 2006-12-29
Abstract
Abstract A composition and method of using the same for treating human skin of all races for a wide variety of skin ailments, including acne, blemishing, aging, sun damage and cancerous lesions, and other problems associated with skin disorders. The method comprises applying to a region of damaged skin a composition of trichloroacetic acid, a surfactant having cell growth stimulatory properties, and an emulsifier. The ratio of the various ingredients can be varied to effect optimal treatment for a particular type of skin. For treatment of certain disorders, the effect of the composition is enhanced if the skin is irradiated with a suitable light source. The latter stimulates even skin regeneration. Several days after treatment, the damaged area peels off, and a new layer of vibrant, evenly colored, healthy skin is apparent. The procedure can be repeated without adverse effects, although generally a single application is sufficient.
Inventors
- 👤 Zein E. Obagi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:05
CPC Classifications
A; A61; A61Q; A61Q19/00; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/33; A61K8/36; A61K8/40; A61K8/43; A61K8/96; A61K8/97; A61K8/9783; A61K8/9794; A61Q19/08
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
59 words
A method of treating damaged areas of skin comprising the steps of: applying to said damaged area a therapeutically effective amount of a composition comprising trichloroacetic acid, a surfactant having growth stimulatory activity, and an emulsifier; and irradiating said area of damaged skin in contact with said composition for a time sufficient to induce peeling of said damaged area.
Claim 2
Independent Claim
59 words
A method of treating damaged areas of skin comprising the steps of: applying to said damaged area a therapeutically effective amount of a composition comprising trichloroacetic acid, a surfactant having growth stimulatory activity, and an emulsifier; and irradiating said area of damaged skin in contact with said composition for a time sufficient to induce peeling of said damaged area.
Claim 3
Dependent Claim
22 words
A method as described in claim 1 wherein said composition comprises about 10-50% trichloroacetic acid, and 0.1% surfactant having growth stimulatory activity.
Claim 4
Dependent Claim
16 words
A method as described in claim 2 wherein said growth stimulatory agent is a steroid saponin.
Claim 5
Dependent Claim
23 words
A method as described in claim 3 wherein said steroid saponin is registered with the Federal government and has Federal registration no. 121-1163.
Claim 6
Dependent Claim
13 words
A method as described in claim 6 wherein said emulsifier is chlorhexidine gluconate.
Claim 7
Dependent Claim
30 words
A method as described in claim 1 wherein said emulsifier is selected from the group consisting of salts and mono- and diglycerides of aliphatic monocarboxylic acids having 10-22 carbon atoms.
Claim 8
Dependent Claim
25 words
A method as described in claim 1 wherein irradiation of damaged skin comprises lights of wavelengths from about 290-400 nanometers, visible light and infrared light.
Claim 9
Dependent Claim
32 words
A method as described in claim 1 wherein said damaged skin is selected from the group consisting of seborrheic keratosis, acne rosaua, lentigo senilis, and acne vulgaris, meloma, actenic veratosis, and scars.
Claim 10
Independent Claim
82 words
A method of treating damaged areas of skin comprising the steps of: testing the skin to determine its sensitivity to light radiation; shielding non-damaged areas of skin from said radiation; applying to said damaged area a therapeutically effective amount of a composition comprising trichloroacetic acid, a surfactant having cell growth stimulatory activity, and an emulsifier; and radiating the damaged area of skin having said composition for a time sufficient to induce peeling of said skin based on its sensitivity to said radiation.
Claim 11
Independent Claim
82 words
A method of treating damaged areas of skin comprising the steps of: testing the skin to determine its sensitivity to light radiation; shielding non-damaged areas of skin from said radiation; applying to said damaged area a therapeutically effective amount of a composition comprising trichloroacetic acid, a surfactant having cell growth stimulatory activity, and an emulsifier; and radiating the damaged area of skin having said composition for a time sufficient to induce peeling of said skin based on its sensitivity to said radiation.
Claim 12
Dependent Claim
16 words
A method as described according to claim 9 wherein said composition comprises about 10-50% trichloroacetic acid.
Claim 13
Dependent Claim
18 words
A method as described in claim 10 wherein said surfactant having growth stimulatory activity is a steroid saponin.
Claim 14
Dependent Claim
16 words
A method as described in claim 11 wherein said steroid saponin has Federal Registry No. 121-1163.
Claim 15
Dependent Claim
13 words
A method as described in claim 12 wherein said composition comprises 0.1% surfactant.
Claim 16
Dependent Claim
24 words
A method as described in claim 13 wherein said light radiation comprises light in the region of about 290-400 nanometers, visible and infrared light.
Claim 17
Independent Claim
42 words
A method for treating skin disorders comprising applying to a region of skin a therapeutically effective amount of a composition comprising between about 10-50% trichloroacetic acid, 0.1% steroid saponin, and an emulsifier for a time sufficient to induce peeling of said skin.
Claim 18
Independent Claim
42 words
A method for treating skin disorders comprising applying to a region of skin a therapeutically effective amount of a composition comprising between about 10-50% trichloroacetic acid, 0.1% steroid saponin, and an emulsifier for a time sufficient to induce peeling of said skin.
Claim 19
Dependent Claim
13 words
A method as described in claim 15 wherein said emulsifier is chlorhexidine gluconate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-16 | 1993-04-17 | 1993-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-16 | 1997-04-17 | 1997-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-16 | 2001-04-17 | 2001-10-17 | $7700.00 | Window Closed / Lapsed |