Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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US Patent 4834985 - Controlled release pharmaceutical composition
US Patent Issued on May 30, 1989
Estimated Patent Expiration Date:
May 19, 2007Estimated 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.
Estimated Patent Expiration Date:
May 19, 2007Estimated 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.AbstractA solid, controlled release, pharmaceutical composition comprising an active ingredient incorporated in a matrix comprising a first substance selected from a water soluble polydextrose and a water soluble cyclodextrin and a second substance selected from a C12 -C36 fatty alcohol and a polyalkylene glycol.Preferably the first substance is a cyclodextrin, especially a beta-cyclodextrin, while the second substance is a C14 -C22 fatty alcohol, especially stearyl alcohol, cetyl alcohol, cetostearyl alcohol or myristyl alcohol. The matrix may also contain a cellulose ether, especially a hydroxyalkylcellulose or a carboxyalkylcellulose. | InventorsAssigneeApplicationNo. 07/052585 filed on 05/19/1987US Classes:424/488, Polysaccharides (e.g., cellulose, etc.)424/457, Sustained or differential release424/458, Containing discrete coated particles pellets, granules, or beads424/468, Sustained or differential release type424/469, Discrete particles in supporting matrix424/484, Matrices424/490, Coated (e.g., microcapsules)424/494, Cellulose derivatives424/499, Contains proteins or derivative or polysaccharides or derivative424/502, Contains waxes, higher fatty acids, higher fatty alcohols514/58, Dextrin or derivative514/965, Discrete particles in supporting matrix514/971, Crystallization point depressant or cold stabilizer containing536/103Dextrin or derivativeField of Search424/485, Natural gums, resin or latex424/498, Containing waxes, higher fatty acids, higher fatty alcohols, or derivatives thereof424/502, Contains waxes, higher fatty acids, higher fatty alcohols424/484, Matrices424/488, Polysaccharides (e.g., cellulose, etc.)424/457, Sustained or differential release424/458, Containing discrete coated particles pellets, granules, or beads424/468, Sustained or differential release type424/469, Discrete particles in supporting matrix424/490, Coated (e.g., microcapsules)424/494, Cellulose derivatives424/499Contains proteins or derivative or polysaccharides or derivativeExaminersPrimary: Page, Thurman K.Attorney, Agent or FirmUS Patent References2921883, 3082154, 3084294, 3147187, 3492397, 3922339, 4722815Process of making a synthetic resin product containing a molecular inclusion compound in cyclodextrinIssued on: 02/02/1988 Inventor: Shibanai International ClassA61K 9/20 (20060101)Foreign Application Priority Data1986-06-05 GB |
