Patents by Inventor Arlin Lehman

Arlin Lehman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Disposable multitest bacteria filter
    Patent number: 5390668
    Abstract: A one piece disposable bacteria/virus filter is suited for all lung tests. The 31/2" outside diameter embodiment has a low 70 cc dead space and a low 0.60 mm H.sub.2 O/liter/second airflow at 12 liters per second. The 4" outside diameter embodiment has a low 70 cc dead space and a low 0.45 cm H.sub.2 O/liter/second airflow at 12 liters per second. Each embodiment has two plastic body halves; each having fins or pins or crosshairs to support the central area of the Filtrete.RTM. internal filter mounted therebetween.
    Type: Grant
    Filed: June 22, 1993
    Date of Patent: February 21, 1995
    Assignee: Pulmonary Data Service Instrumentation, Inc.
    Inventor: Arlin Lehman