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Two step method for preparation of controlled release formulations 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • C08J-009/28
출원번호 US-0644869 (1991-01-23)
발명자 / 주소
  • Won Richard (Palo Alto CA)
출원인 / 주소
  • Advanced Polymer Systems, Inc. (Redwood City CA 02)
인용정보 피인용 횟수 : 67  인용 특허 : 0

초록 ▼

Active substances intended for topical application are incorporated in novel formulations in which they are retained as impregnants inside the pores of porous solid particles or microspheres. The pores form a continuous network open to the exterior of the particles, permitting outward diffusion of t

대표청구항 ▼

A method for preparing a delivery system for an active substance, said method comprising: polymerizing monomers suspended in an immiscible phase in the presence of a porogen to form a plurality of rigid cross-linked polymer beads each defining a substantially non-collapsible internal pore network ha

이 특허를 인용한 특허 (67)

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  10. Srinivas, Arutla; Bhagwatwar, Harshal P.; Arvind, Vakati Venkat; Perumal, Saravana; Narayana, Vemula Sathya; Rao, Mandavalli Srirama Sarveswara; Vobalaboina, Venkateswarlu; Sreedharala, Nookaraju Venkata, Compositions for drug delivery.
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  12. Sertchook, Hanan; Toledano, Ofer; Bar-Simantov, Haim, Compositions for the treatment of rosacea.
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  14. Dihora, Jiten Odhavji; Hasegawa, Jun, Conditioner compositions with increased deposition of polyacrylate microcapsules.
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  16. Hayward James A. (4 Chuck Ct. Port Jefferson NY 11777) Goldstein Mindy S. (31 Southwick Ct. Plainview NY 11803) Brown Miriam (275 Candee Ave. Sayville NY 11782) Ceccoli Joseph D. (26 Neil Dr. Farming, Cosmetic delivery system for salicylic acid and process for preparation of same.
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  21. Dischler Louis ; Moyer Terry T. ; Henson Jimmy B., Dilatant powder coated fabric and containment articles formed therefrom.
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  22. Yamamoto, Akira, Dosage form comprising an active ingredient and a plurality of solid porous microcarriers.
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  26. Steffier, Larry W.; Kurz, David; Raney, Robert R.; Robinson, Cary B., Durable film coating compositions having sustained slow-release capability, and methods of use therefor.
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  27. Steffier, Larry; Kurz, David; Raney, Robert B.; Robinson, Cary B., Durable film coating compositions having sustained slow-release capability, and methods of use therefor.
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  57. Froix Michael ; Pukshansky Masha ; Nacht Sergio, Retinoid formulations in porous microspheres for reduced irritation and enhanced stability.
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