The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 23, 1997
Filed:
Mar. 12, 1996
Katsumi Iga, Suita, JP;
Shigeo Yanai, Himeji, JP;
Keiichiro Okabe, Komae, JP;
Masaki Itoh, Yokohama, JP;
Takeda Chemical Industries, Ltd., Osaka, JP;
Advance Co., Ltd., Tokyo, JP;
Teikoku Hormone Mfg. Co., Ltd., Tokyo, JP;
Abstract
A calcitonin, its derivative or a salt thereof is transdermally delivered by iontophoresis in which a substantially constant voltage in the range of 3 to 20 V is applied at an electric current of 0.05 to 0.5 mA/cm.sup.2. In this process, the calcitonin can be delivered transdermally with a higher absorptivity by applying a higher voltage for a short period (at a voltage of about 6 to 14 V for about 5 to 15 minutes) in the initial stage of the voltage application, and then applying a lower voltage for a long period (at a voltage of about 3 to 9 V for about 30 to 40 minutes).