Aspirin tablet
Patent 4555399 Issued on November 26, 1985. Estimated Expiration Date: 
March 8, 2004. 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.
March 8, 2004. 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 ReferencesInventorAssigneeApplicationNo. 06/587533 filed on 03/08/1984US Classes:424/465, With claimed perfecting feature in contents (e.g., excipient, lubricant, etc.)424/497, Containing solid synthetic polymers514/165Aspirin per se (i.e., 2-(acetyloxy)benozic acid)ExaminersPrimary: Rose, Shep K.Attorney, Agent or FirmInternational ClassesA61K 31/60 (20060101)A61K 9/20 (20060101) A61K 9/50 (20060101) AbstractA tablet, which readily disintegrates in gastric fluid to give aspirin crystals coated with a polymeric film preventing the aspirin crystals from contacting the stomach wall but not preventing access of gastric fluid to the aspirin contained within the polymer film, which consists of a plurality of aspirin crystals 20-60 mesh in size coated with about 3-10% by weight of a polymeric mixture comprising from about 1.5 to about 15 parts by weight ethylcellulose and about one part by weight hydroxypropylcellulose; a compression aid; a disintegrant; and a tableting aid.Other References
| |
