U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Lipsopheres for controlled delivery of substances

Patent 5188837 Issued on February 23, 1993. Estimated Expiration Date: Icon_subject October 3, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

3004892

3159545

3159600

3804776

Moisturizing units and moisturizing compositions containing the same
Patent #: 3957971
Issued on: 05/18/1976
Inventor: Oleniacz

Liposome-encapsulated actinomycin for cancer chemotherapy
Patent #: 3993754
Issued on: 11/23/1976
Inventor: Rahman ,   et al.

Chromatographic spotter
Patent #: 4004548
Issued on: 01/25/1977
Inventor: Smola ,   et al.

Process for producing microcapsules
Patent #: 4010038
Issued on: 03/01/1977
Inventor: Iwasaki ,   et al.

Cross-linked hydroxypropylcellulose microcapsules and process for making
Patent #: 4025455
Issued on: 05/24/1977
Inventor: Shackle

Lipid A-preparation
Patent #: 4029762
Issued on: 06/14/1977
Inventor: Galanos ,   et al.

More ...

Inventor

Assignee

Application

No. 770706 filed on 10/03/1991

US Classes:

424/450, Liposomes264/4.6, Solid-walled microcapsule formed by physically removing a constituent (e.g., evaporation, extraction, etc.)424/405, Biocides; animal or insect repellents or attractants (e.g., disinfectants, pesticides, etc.)424/417, Coated particulate form (e.g., liposome, etc.)428/402.2Microcapsule with fluid core (includes liposome)

Examiners

Primary: Page, Thurman K.
Assistant: Kishore, G. S.

Attorney, Agent or Firm

Foreign Patent References

  • 0042249 EP. 12/13/1981
  • 0167825 EP. 01/13/1986
  • 0177368 EP. 04/13/1986
  • 0270460 EP. 06/13/1986
  • 0209870 EP. 01/13/1987
  • 0274431 EP. 07/13/1988
  • 2601207A1 DE. 07/13/1976
  • WO83/00294 WO. 02/13/1983
  • WO8500011 WO. 01/13/1985
  • 2135647A GB. 05/13/1984

International Classes

A61K 031/47
A01N 025/00

Abstract

A microsuspension system and method for its preparation is disclosed. The microsuspension contain lipospheres, which are solid, water-insoluble microparticles that have a layer of a phospholipid embedded on their surface. The core of the liposphere is a solid substance to be delivered, or a substance to be delivered that is dispersed in an inert solid vehicle, such as a wax.

Other References

  • Friedman, et al., Drug Development and Industrial Pharmacy 13(9-11), 2067 (1987)
  • Gasco, et al., Il Farmaco--Ed. Pr. 43(10), 326 (1987)
  • Gasco, et al., International Journal of Cosmetic Science 10(6), 263 (1988)
  • Kawamata, et al., Journa of Pharmaceutical Sciences 76(11), S275, Abstract No. N 04-W-19 (1987)
  • Schmidt, et al., Acata Pharmaceutica Technologica 38(1), 34 (1989)
  • Wang, et al., Journal of Pharmaceutical Sicences 76(11), S305, Abstract No. N 07-W-21 (1987)
  • Wang, et al., Journal of Pharmaceutical Sciences 76(11), S205, Abstract No. N 07-W-22 (1987)
  • Sasaki, et al, J. Pharm. Dyn. 7, 120-130 (1984)
  • Venkatesh, et al., Journal of Pharmaeutical Sciences 76(11), S305, Abstract No. N 07-W-19 (1987)
  • Gao and Huang, Biochim. Biophys. Acta 897, 377-383 (1987
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