P

Inventor

HUGHES DOUGLASS E

US13 patents
⚠️ This page may combine multiple inventors who share the name “HUGHES DOUGLASS E”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

(unassigned)

5 patents
US6395170B1May 28, 2002

Universal filter for soda pop and bottled water bottles

124 citations97
USD448448SSep 25, 2001

Filter housing

56 citations96
USD448971SOct 9, 2001

Drinking container closure

69 citations95
US6096197AAug 1, 2000

Shower filter for chlorine removal and scale deposit prevention

54 citations95
US6267887B1Jul 31, 2001

Shower filter for chlorine removal and scale deposit prevention

45 citations88

3M INNOVATIVE PROPERTIES CO

4 patents
US7112280B2Sep 26, 2006

Gas porous polymer filter and methods of use

3M INNOVATIVE PROPERTIES CO64 citations96
US7112272B2Sep 26, 2006

Liquid and gas porous plastic filter and methods of use

3M INNOVATIVE PROPERTIES CO53 citations94
US7169304B2Jan 30, 2007

Porous polymer water filter and methods of use in refrigeration

3M INNOVATIVE PROPERTIES CO33 citations91
US7374680B2May 20, 2008

Filtration matrix

3M INNOVATIVE PROPERTIES CO12 citations82

HUGHES DOUGLASS E

2 patents
US6523711B1Feb 25, 2003

Automatic valved bottle cap for use with liquid containers

HUGHES DOUGLASS E237 citations98
US6468435B1Oct 22, 2002

Automatic valved filter assembly

HUGHES DOUGLASS E51 citations95

RICH BUHLER

1 patent
US6524477B1Feb 25, 2003

Gravity-flow filtration cartridge for the removal of microorganisms and/or other contaminants

RICH BUHLER193 citations96

ALPINE WATER PURIFICATION INC

1 patent
US5407573AApr 18, 1995

Continuous flow water-purifying device

ALPINE WATER PURIFICATION INC49 citations93