Adobe® Reader® is required to view these files. Click here to download if you do not already have it installed.

US Patent and Trademark Office

	Patent No.	Title
1	4,759,778	Air filter
2	5,209,078	Vacuum fluid cooling apparatus
3	5,222,375	Adsorption/humidification cooler for humid gaseous fluids
4	5,630,990	Ozone generator with releasable connector and grounded current collector
5	5,676,173	In-line venturi
6	5,879,641	Ozone generator
7	5,934,328	In-line venturi
8	6,001,315	Apparatus for chemical conversion
9	6,060,027	Ozone generator
10	6,098,244	Handle for vacuum cleaner having an offset hand grip portion
11	6,099,661	Method and apparatus for increasing the air flow into a vacuum cleaner head
12	6,101,672	Rotatable handle for a vacuum cleaner
13	6,123,779	Pressure based sensing means for adjusting the height of an agitator in a vacuum cleaner head
14	6,129,775	Terminal insert for a cyclone separator
15	6,135,708	Prandtl layer turbine
16	6,141,826	Center air feed for cyclonic separator
17	6,153,111	Method and apparatus for purifying water
18	6,156,100	Method and apparatus for concentrating a gas using a single stage adsorption zone
19	6,156,102	Method and apparatus for recovering water from air
20	6,162,283	Method and apparatus for concentrating a gas using a single stage adsorption zone
21	6,168,716	Cyclone separator having a variable transverse profile
22	6,170,119	Method and apparatus for reducing the size of elongate particulate material in a vacuum cleaner head
23	6,173,474	Construction of a vacuum cleaner head
24	6,174,127	Prandtl layer turbine
25	6,183,641	Prandtl layer turbine
26	6,190,622	Ozone generator
27	6,217,635	Method and apparatus for concentrating a gas using a single stage adsorption chamber
28	6,221,134	Apparatus and method for separating particles from a cyclonic fluid flow
29	6,224,325	Prandtl layer turbine
30	6,226,990	Heat engine
31	6,228,151	Apparatus and method for separating particles from a cyclonic fluid flow
32	6,228,260	Apparatus for separating particles from a cyclonic fluid flow
33	6,231,645	Apparatus and method for separating particles from a cyclonic fluid flow utilizing a movable access member associated with a cyclonic separator
34	6,235,207	Method for measuring the degree of treatment of a medium by a gas
35	6,238,177	Prandtl layer turbine
36	6,238,451	Vacuum cleaner
37	6,243,917	Floating brush for a vacuum cleaner head
38	6,250,324	In-line venturi
39	6,251,172	Portable water recovery and dispensing apparatus
40	6,251,296	Apparatus and method for separating particles from a cyclonic fluid flow
41	6,261,052	Prandtl layer turbine
42	6,261,379	Floating agitator housing for a vacuum cleaner head
43	6,269,639	Heat engine
44	6,269,640	Heat engine
45	6,274,053	Ozonation process
46	6,277,278	Cyclone separator having a variable longitudinal profile
47	6,279,318	Heat exchanger for a heat engine
48	6,279,319	Heat engine
49	6,280,143	Blade for fluid pump
50	6,280,,633	Ozone sensor and method for use of same in water purification system
51	6,286,310	Heat engine
52	6,293,101	Heat exchanger in the burner cup of a heat engine
53	6,307,358	Method and apparatus for delivering power to a mechanical or electrical system
54	6,309,514	Process for breaking chemical bonds
55	6,311,490	Apparatus for heat transfer within a heat engine
56	6,311,491	Heat engine
57	6,312,588	Water purifier
58	6,312,594	Insert for a cyclone separator
59	6,312,606	Method for measuring the degree of treatment of a medium by a gas
60	6,328,527	Prandtl layer turbine
61	6,332,319	Exterior cooling for a heat engine
62	6,333,017	Method for the production of ozone
63	6,334,234	Cleaner head for a vacuum cleaner
64	6,336,326	Apparatus for cooling a heat engine
65	6,344,064	Method and apparatus of particle transfer in multi-stage particle separators
66	6,345,666	Sublouvred fins and a heat engine and a heat exchanger having same
67	6,361,686	Construction of a water treatment reservoir for a domestic water treatment appliance
68	6,383,266	Vacuum cleaner utilizing electrostatic filtration and electrostatic precipitator for use therein
69	6,391,095	Air flow passage for a cyclonic separator and vacuum cleaner having same
70	6,391,191	Domestic water treatment appliance
71	6,419,719	Cyclonic vacuum cleaner
72	6,439,831	Method and apparatus for improving efficiency and/or altering acoustic signature of surface and submerged vessels
73	6,440,197	Apparatus and method separating particles from a cyclonic fluid flow including an apertured particle separation member within a cyclonic flow region
74	6,447,733	Fluid contact chamber
75	6,455,000	Method and apparatus for measuring the concentration of a gas
76	6,457,205	Vacuum cleaner having a plurality of power modes
77	6,475,352	Method and apparatus for monitoring an ozone generator in a household water purifier
78	6,482,252	Vacuum cleaner utilizing electrostatic filtration and electrostatic precipitator for use therein
79	6,488,819	Process and apparatus for chemical conversion
80	6,491,811	Sensor for a water treatment apparatus
81	6,491,815	Construction of a water treatment reservoir for a domestic water treatment appliance
82	6,491,879	Ozone generator
83	6,517,731	Ozonation process
84	6,526,622	Vacuum cleaner actuated by reconfiguration of the vacuum cleaner
85	6,527,950	Construction of a water treatment appliance
86	6,533,834	Apparatus and method for separating particles from a cyclonic fluid flow
87	6,568,900	Pressure swing contactor for the treatment of a liquid with a gas
88	6,582,489	Method and apparatus of particle transfer in multi-stage particle separators
89	6,596,046	Cyclone separator having a variable longitudinal profile
90	6,599,340	Air flow passage for a cyclonic separator and vacuum cleaner having same
91	6,736,873	Air flow passage for a vacuum cleaner
92	6,740,144	Vacuum cleaner utilizing electrostatic filtration and electrostatic precipitator for use therein
93	6,772,961	Methods and apparatus for spray forming, atomization and heat transfer
94	6,782,585	Upright vacuum cleaner with cyclonic air flow
95	6,874,197	Apparatus and method for separating particles from a cyclonic fluid flow
96	6,902,596	Air flow passage for a vacuum cleaner
97	6,984,364	Process and apparatus for chemical conversion
98	7,171,810	Stirling engine with hydraulic output
99	7,179,314	Vacuum cleaner
100	7,228,593	Appliance which utilizes a magnetic clutch to transmit power from a drive means to a movable member and a magnetic clutch
101	D533,659	Ostomy bag
102	D535,392	Ostomy bag
103	7,329,294	Dirt Container for a Surface Cleaning Apparatus and Method of Use
104	7,374,598	Methods and Apparatus for Spray Forming, Atomization and Heat Transfer