US4355046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dermatologic and cosmetic ointment base
Assignee: Individual
•
Filing: 1981-03-09
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Granted: 1982-10-19
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Expires: 2001-03-09
Abstract
Abstract Petrolatum fractions in which to a large extent no white oils are present are combined with a volatile siloxane, hexamethyldisiloxane, octamethylcyclotetrasiloxane and/or decamethylcyclopentasiloxane to provide an ointment base which enables these petrolatum fractions to be spread easily on the skin. Evaporation of the solvent leaves a vaseline film on the skin that is nonirritating and yet highly resistive to washing away. A high melting microcrystalline wax as an additive can reduce the lustre of the film. Lower alcohols can also be added to make spreading still easier.
Inventors
- 👤 Hans R. Suess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:18
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0014; A61K47/00; A61K47/06; A61K47/24; A61K8/00; A61K8/18; A61K8/30; A61K8/31; A61K8/58; A61K8/585; A61Q; A61Q17/00; A61Q19/00
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
89 words
Ointment base for use on the skin, in which at least 80 percent by weight thereof is composed of a mixture consisting of 10 to 90 percent by weight of petrolatum fractions in which the ratio by weight of solid constituents to constituents that are liquid at 20 to 50 C is greater than 3:1 and 90 to 10 percent by weight of a material serving as a solvent for said petrolatum fractions and selected from the group which consists of octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, hexamethyldisiloxane and mixtures of said siloxanes.
Claim 2
Dependent Claim
89 words
Ointment base for use on the skin, in which at least 80 percent by weight thereof is composed of a mixture consisting of 10 to 90 percent by weight of petrolatum fractions in which the ratio by weight of solid constituents to constituents that are liquid at 20 to 50 C is greater than 3:1 and 90 to 10 percent by weight of a material serving as a solvent for said petrolatum fractions and selected from the group which consists of octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, hexamethyldisiloxane and mixtures of said siloxanes.
Claim 3
Dependent Claim
29 words
Ointment base as defined in claim 1, in which the ratio by weight of said petrolatum fractions to said solvent material is in the range from 30:70 to 70:30.
Claim 4
Dependent Claim
27 words
Ointment base as defined in claim 1 or claim 2, in which said petrolatum fractions contain substantially no constituents having fewer than 20 carbon atoms per molecule.
Claim 5
Dependent Claim
24 words
Ointment base as defined in claim 1 or 2, in which said petrolatum fractions contain less than 20 percent by weight of white oils.
Claim 6
Dependent Claim
28 words
Ointment base as defined in claim 1, in which said ratio of solid to liquid constituents of said petrolatum fractions is in the range from 5:1 to 7:1.
Claim 7
Dependent Claim
29 words
Ointment base as defined in claim 5, in which the ratio by weight of said petrolatum fractions to said solvent material is in the range from 60:40 to 80:20.
Claim 8
Dependent Claim
23 words
Ointment base as defined in claim 1, 2, 6 or 7, in which high melting microcrystalline waxes are included as an additive therein.
Claim 9
Dependent Claim
38 words
Ointment base as defined in claim 8, in which said high melting microcrystalline wax additive is present in a proportion of between 5 and 15 percent relative to the combined weight of petrolatum fractions and said solvent material.
Claim 10
Dependent Claim
22 words
Ointment base as defined in claim 1, 2, 6 or 7, in which physiologically tolerable lower alcohols are included as additive material.
Claim 11
Dependent Claim
19 words
Ointment base as defined in claim 9, in which high melting microcrystalline wax is also included as an additive.
Claim 12
Dependent Claim
37 words
Ointment as defined in claim 10, in which said high melting microcrystalline wax additive is present in a proportion of between 5 to 15 percent relative to the combined weight of petrolatum fractions and said solvent material.
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) | 1985-10-18 | 1986-04-19 | 1986-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-18 | 1990-04-19 | 1990-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-18 | 1994-04-19 | 1994-10-19 | $7700.00 | Window Closed / Lapsed |