Room air purifier
United States Patent D574072

Carlson, Casey L. (Edina, MN, US)
Kappel, Glendon D. (Eagan, MN, US)
Application Number:
Publication Date:
Filing Date:
3M Innovative Properties Company (St. Paul, MN, US)
Primary Class:
International Classes:
(IPC1-7): 2304
Field of Search:
D14/170, D23/362, D23/369, D23/351, D23/355, 55/473, D23/366, 96/63, D14/172, D23/360, 261/DIG.17, D23/332, D23/352, D14/188, 261/DIG.31, 261/DIG.88, D23/336, D23/356, D23/335, D23/359, 422/122, 55/504, 55/356, D23/333, 261/DIG.65, D23/364, D23/342, 422/120
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US Patent References:
D560788Air freshener for setting on a horizontal surfaceJanuary, 2008Farrell et al.D23/366
D550827Air cleanerSeptember, 2007Ediger et al.D23/364
D548317Air freshener deviceAugust, 2007Newton et al.D23/366
D544593Chemical heating volatilizing apparatusJune, 2007YamamotoD23/366
D539882Heat pumpApril, 2007LiD23/351
D536431HumidifierFebruary, 2007Campbell et al.D23/356
D513797HumidifierJanuary, 2006WangD23/356
D462431Deodorant dispenserSeptember, 2002Bunce et al.D23/366
D449677Air-purifying deviceOctober, 2001Denham et al.D23/364
D449877HumidifierOctober, 2001Delmenico et al.D23/356
D434843Air freshener jarDecember, 2000Zaragoza et al.D23/366
D430658Oil burnerSeptember, 2000FarceD23/366
D355962Air cleanerFebruary, 1995Chiu et al.D23/364

Primary Examiner:
Zarfas, Louis S.
Assistant Examiner:
Muller, David G.
Attorney, Agent or Firm:
Patchett, David B.

1. The ornamental design for a room air purifier, as shown and described.


FIG. 1 is a perspective view showing the new design for a room air purifier;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a side view thereof, the opposite side view being a mirror image of the side view shown;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.