Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Particulate form
Reexamination Certificate
2002-03-12
2003-09-02
Dees, Jose G. (Department: 1616)
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Particulate form
C424S401000, C424S490000, C424S059000, C424S060000, C424S078030, C514S828000, C514S844000, C514S846000
Reexamination Certificate
active
06613359
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to optically-activated fixed particles for use in cosmetic preparations to reduce the visual perception of skin imperfections. More particularly, these optically-activated fixed particles diffuse ambient light and emit visible light to reduce the visual perception of imperfections including, but not limited to, cellulite, wrinkles, discoloration by veins and arteries, shadows, blotchiness, pores, and follicles. Additionally, these optically-activated fixed particles reduce the perception of wrinkles around the eyes and mouth, or mild discolorations such as mild scars and blotchiness of the skin in the face area, and can be used in an encapsulated or non-encapsulated form in the formation of various cosmetic preparations selected from the group consisting of skin lotions, creams, shampoos, body and skin rinses, bath gels, soaps, hair conditioners, color conditioners and rinses, hair color solutions, foundation liquids and powders (compressed or loose), tooth pastes and oral rinses, and color cosmetics and skin treatment products.
BACKGROUND OF THE INVENTION
Natural-looking skin is influenced by a number of physiological and genetic factors. Standard definitions of beautiful skin include skin having a transparent quality with uniform undertones of color (i.e. rosy red cheeks). The basis for this natural-looking appearance is in the skin structure itself. The outer layer of human skin is a semi-transparent layer known as the stratum corneum. The transparency of the stratum corneum permits glimpses of the deeper layers of skin, where blood vessels and pigments reside; the reddish hue of the blood vessels' hemoglobin, and the brown/black hue of melanin, the primary skin pigment, combine to produce (what we view as) the skin's color. Of course, in addition to ideal skin having the transparent look with a uniform color distribution, it should also be smooth and even, with no apparent surface flaws. Only a few individuals can ever hope to meet such a standard without some outside assistance. Thus, a wide variety of cosmetics exist to help out where nature has failed.
Although makeup is worn on facial skin, it has not mimicked the actual appearance of natural skin beauty. Currently, the trend for cosmetic preparations have been to more natural-looking make-ups. In particular, one of the long-sought goals has been the development of a foundation that does not give the user a “made-up” look. In reality, however, it is difficult to accomplish the goal of achieving coverage of flaws and unevenness of skin tone, while still maintaining the vibrant look of clean bare skin. This is primarily because those components of makeups which provide the desired color and coverage, such as the titanium or iron oxide pigments, are largely opaque, and therefore obscure that sought-after vibrant transparency. Although in recent years, transparent pigments have become available, the coverage needed to mask flaws in the surface of the skin is frequently lacking.
There remains a need for cosmetic preparations that convey the perception that the user's skin has fewer wrinkles and cellulite and fewer imperfections, generating even tone, obscuring discolorations to the skin and/or reducing skin blotchiness through the use of optically-activated fixed particles. These optically-activated fixed particles will allow for the emission and reflection of light and may increase the diffusion of light to accomplish the foregoing.
DESCRIPTION OF THE PRIOR ART
The use of optical brightener compounds have been disclosed in the prior art. For example, U.S. Pat. No. 4,032,263 to GRAY discloses a bleaching and brightening detergent composition. This water soluble laundry detergent includes an organic anionic detergent, nonionic detergent or mixture thereof, a builder salt, preferably including a silicate, a peroxymonosulfate bleaching agent, a bromide promoter for the beaching agent and one or more optical brighteners which are stable in the presence of the bleach and the promoter. This prior art patent does not teach or disclose the structure, configuration or composition of the optically-activated fixed particles for use in cosmetic preparations as disclosed in the present invention.
U.S. Pat. No. 4,752,496 to FELLOWS et al discloses a method of applying cosmetics to a substrate and article. The cosmetics, which are normally dry, are combined with a liquid carrier and film forming agent an deposited onto a substrate. The film forming agent acts to micro encapsulate the cosmetic and lighting bond the cosmetic to the substrate. When the film forming agent dries, it protects the cosmetic. Thus, the cosmetic can be applied to a substrate and covered with a paperboard sheet. This prior art patent does not teach or disclose the structure, configuration or composition of the optically-activated fixed particles for use in cosmetic preparations as disclosed in the present invention.
U.S. Pat. No. 6,117,435 to PAINTER et al discloses natural look cosmetic compositions. This topical application composition for use on skin includes silica beads having an inner core of silica, a middle layer of metal oxide, and an outer layer of silica; at least one interference pigment; and optionally, at least one non-interference pigment, in a cosmetically or pharmaceutically-acceptable formula. These cosmetic compositions confer a natural appearance to the user's skin, while also reducing the appearance of flaws or defects in the skin without conferring an opaque or made-up appearance. This prior art patent does not teach or disclose the structure, configuration or composition of the optically-activated fixed particles for use in cosmetic preparations as disclosed in the present invention.
None of the aforementioned prior art patents teach or disclose the use of optically-activated fixed particles for use in cosmetic preparations. Further, no prior art patents teach or disclose optically-activated fixed particles which are able to both scatter and emit light in a combined manner in order to reduce the visual perception of shadows, skin discolorations, wrinkles and cellulite when applied to the skin surface.
Accordingly, it is an object of the present invention to provide optically-activated fixed particles for use in cosmetic preparations, wherein the optically-activated fixed particles are able to scatter light at all wavelengths as well as to absorb visible light at certain wavelengths and emit visible light at longer wavelengths (releases energy in the form of light), in order to reduce the visual appearance and perception of skin imperfections, such as shadows, skin discolorations, wrinkles and cellulite when applied to the skin surface.
Another object of the present invention is to provide optically-activated fixed particles in which the substrate (particle) may be pre-treated, for example, with a swelling agent in order to make the substrate particle wettable and/or electrostatically and/or ionically available for fixing, such that the swelling agent treatment of the particles swells the particles and they wet-out to prepare the particles for fixation to a fluorescent compound.
Another object of the present invention is to provide fixed fluorescent particles that include fluorescent compounds selected from the group consisting of, but not limited to, derivatives of stilbene, 4,4′ diaminostilbene, biphenyl, heterocycles, or any other fluorescent materials such as Tinopal 5BM, Calcofluor White RC (Stilbene 4), Calcofluor CG (Stilbene 3), and Leucophor BSB, or equivalents.
Another object of the present invention is to provide optically-activated fixed particles, having a fluorescent compound being adhered or fixed to the substrate by Van Der Waal's forces or ionic bonding or covalent bonding or hydrogen bonding, or other strong or weak physiochemical association.
Another object of the present invention is to use optically-activated fixed particles of a size that is below 50&mgr; (microns) in cosmetic applications, wherein the preferred size of the fixed particle
Dees Jos,e G.
George Konata
Lipo Chemicals Inc.
Sutton Ezra
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