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:
Jun. 09, 2009
Filed:
Mar. 12, 2007
Ranjit A. DE Silva, Racine, WI (US);
Brian T. Davis, Burlington, WI (US);
Gopal P. Ananth, Racine, WI (US);
Ranjit A. De Silva, Racine, WI (US);
Brian T. Davis, Burlington, WI (US);
Gopal P. Ananth, Racine, WI (US);
S.C. Johnson & Son, Inc., Racine, WI (US);
Abstract
Devices for dispensing air treatment chemicals are described. They have a first substrate bearing a first volatile air treatment chemical that is dispensed when the first substrate is heated, and a second substrate bearing a second volatile air treatment chemical that is dispensed from the second substrate when the second substrate is heated. The substrates are positioned in stacked fashion relative to each other, optionally with a permeable membrane there between. There may also be a use-up cue indicator unit coordinated with use of the chemicals. The first and second substrates and indicator unit can be in a single replaceable cartridge unit, preferably with the second substrate in the form of a porous ring that houses the indicator unit.