05238153 is referenced by 97 patents and cites 12 patents.

A dispenser for dispensing sterile solution which includes a valve to control the dispensing of the sterile solution from a container. The valve comprises a solution outlet and an air inlet opening having an associated filter membrane to filter the air passing into the container. When dispensing the solution, force applied to the container causes the solution outlet to open and prevents access of the solution to the air inlet opening. When the force is relieved, a partial vacuum is formed in the container which causes the solution outlet to close. Air is then drawn into the container via the air inlet opening and through the filter membrane.

Title
Dispenser for dispersing sterile solutions
Application Number
7/656867
Publication Number
5238153
Application Date
February 19, 1991
Publication Date
August 24, 1993
Inventor
Edgar M Litzaw
San Anselmo
CA, US
Joseph E Tungol
Elk Grove
CA, US
Bradley E Castillo
Emeryville
CA, US
Agent
Howrey & Simon
Assignee
Pilkington Visioncare
CA, US
IPC
B65D 37/00
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