Local anesthetic mixture for topical application and method for obtaining local anesthesia
Patent 4529601 Issued on July 16, 1985. Estimated Expiration Date: 
August 26, 2002. 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.
August 26, 2002. 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 ReferencesInventorsAssigneeApplicationNo. 06/411624 filed on 08/26/1982US Classes:514/626, Nitrogen in R424/47, Topical live body grooming or adorning aid (e.g., hair spray, antiperspirant, etc.)424/65, ANTI-PERSPIRANTS OR PERSPIRATION DEODORANTS424/68, Aluminum compound containing514/817ANESTHETIC, TOPICALExaminersPrimary: Ore, Dale R.Attorney, Agent or FirmInternational ClassesA61K 31/165 (20060101)A61K 31/21 (20060101) A61K 31/245 (20060101) A61K 31/445 (20060101) Foreign Application Priority Data1977-12-01 SEAbstractThe present invention relates to pharmacological active preparations, especially local anesthetic preparations and deals with the problem of i a obtaining a solution of a local anesthetic agent in the form of its base, where the concentration is higher than otherwise possible. This problem has been dissolved according to the present invention thereby that one local anesthetic agent in the form of its base and as such having a melting point of 30° to 50° C., preferably prilocaine or tetracaine, is provided with one other local anesthetic agent in the form of its base and as such having a melting point of above 30° C., preferably above 40° C., preferably bensocaine, lidocaine, bupivacaine, mepivacaine, etidocaine or tetracaine which agents when brought and heated together form a homogenous oil having a melting of preferably below 40° C., more preferably below 25° C.Other References
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