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:
Sep. 20, 2016
Filed:
Jul. 21, 2006
Trent Deem, Bountiful, UT (US);
Phil Ligrani, Osford, GB;
Bradley C. Hansen, La Jolla, CA (US);
University of Utah Research Foundation, Salt Lake City, UT (US);
Abstract
A high pressure osmotic dispense pump () having a substantially continuous delivery rate and extended delivery times is described and disclosed. The dispense pump () includes a semi-permeable membrane () which is substantially free of distortions and lateral stretching stresses. The membrane housing () and configuration of the present invention allows for consistent and accurate flow rates at the micro-liter level and improved control of the surface area of the semi-permeable membrane (). This osmotic pump () also includes optional methods for activating and deactivating the osmotic process and/or controlling flow rates. Along with these features, the pump can be amplified or modulated to increase the dispense rate and/or adjust the flow rate during operation.