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:
May. 31, 2005
Filed:
Oct. 08, 2002
Kara L. Kotary, Racine, WI (US);
Padma Prabodh Varanasi, Racine, WI (US);
Kara L. Kotary, Racine, WI (US);
Padma Prabodh Varanasi, Racine, WI (US);
S. C. Johnson & Son, Inc., Racine, WI (US);
Abstract
A wick-based delivery system includes a container for holding a liquid, and a porous wick, having a first section of a material with a pore size of a predetermined size and a second section of a material of a predetermined pore size that is greater than that of the material of the first section. The porous wick extends through an opening in the container so that when the liquid is added to the container, a lower region of the porous wick is in contact with the liquid, and an upper region of the porous wick is exposed to the ambient air. In one embodiment, at least a portion of the first section and at least a portion of the second section are exposed to the ambient air. In another embodiment, only the second section is exposed to the ambient air.