US4002737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention and/or treatment of poison ivy dermatitis
Assignee: Research Corp
•
Filing: 1975-10-15
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Granted: 1977-01-11
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Expires: 1995-10-15
Abstract
Abstract The enzymes catechol 1,2-oxygenase and catechol 2,3-oxygenase and mixtures thereof are useful in the prevention and/or treatment of poison ivy dermatitis.
Inventors
- 👤 David P. Borris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:56
CPC Classifications
A; A61; A61K; A61K38/00; A61K38/16; A61K38/43; A61K38/44; C; C12; C12Y; C12Y113/00; C12Y113/11; C12Y113/11001
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
39 words
A method of treating or preventing poison ivy dermatitis which comprises applying to the skin surface susceptible to or evidencing poison ivy dermatitis an effective amount of enzyme selected from the group consisting of catechol 1,2-oxygenase and catechol 2,3-oxygenase.
Claim 2
Independent Claim
39 words
A method of treating or preventing poison ivy dermatitis which comprises applying to the skin surface susceptible to or evidencing poison ivy dermatitis an effective amount of enzyme selected from the group consisting of catechol 1,2-oxygenase and catechol 2,3-oxygenase.
Claim 3
Dependent Claim
13 words
A method in accordance with claim 1 wherein said enzyme is catechol 1,2-oxygenase.
Claim 4
Dependent Claim
13 words
A method in accordance with claim 1 wherein said enzyme is catechol 2,3-oxygenase.
Claim 5
Dependent Claim
19 words
A method in accordance with claim 1 wherein said enzyme is a mixture of catechol 1,2-oxygenase and catechol 2,3-oxygenase.
Claim 6
Dependent Claim
27 words
A method in accordance with claim 1 wherein said enzyme is applied in a dermatologically physiologically acceptable carrier at a concentration in the range 0.001-5% by weight.
Claim 7
Dependent Claim
17 words
A method in accordance with claim 1 wherein said enzyme is applied in an alcoholic solution thereof.
Claim 8
Dependent Claim
15 words
A method in accordance with claim 6 wherein said alcoholic solution is an ethanolic solution.
Claim 9
Dependent Claim
15 words
A method in accordance with claim 1 wherein said enzyme is adsorbed on particulate matter.
Claim 10
Dependent Claim
21 words
A method in accordance with claim 1 wherein said enzyme is applied in immobilized form on a dermatologically physiologically acceptable substrate.
Claim 11
Dependent Claim
43 words
A method in accordance with claim 1 wherein said enzyme is encapsulated within a dermatologically physiologically acceptable encapsulating agent, said agent being capable of being ruptured or being broken to release said enzyme upon frictional contact when applied with rubbing to the skin.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |