Yu-Hsin Chen

Person

Lomita, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
IEEE 1394 or USB powered computer lights
- Patent number 6,802,629
- Issue date Oct 12, 2004
- ACCO Brands, Inc.
- Mark Howard Krietzman
- F21 - LIGHTING
Information Patent Grant
Thin flat illuminator
- Patent number 6,533,436
- Issue date Mar 18, 2003
- Mark Howard Krietzman
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Slide-switched flat illuminator
- Patent number 6,508,569
- Issue date Jan 21, 2003
- Mark Howard Krietzman
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Flat credit card illuminator with flexible integral switching arm
- Patent number 6,447,143
- Issue date Sep 10, 2002
- Mark Howard Krietzman
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Grant
Over-the-door cat scratching post
- Patent number 5,988,114
- Issue date Nov 23, 1999
- Mark Howard Krietzman
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Multi-apertured feline toy and exercise device
- Patent number 5,870,971
- Issue date Feb 16, 1999
- Mark Howard Krietzman
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Under-the-door mounted pet toy
- Patent number 5,829,391
- Issue date Nov 3, 1998
- Mark Howard Krietzman
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Feline exercise and play target object
- Patent number 5,778,825
- Issue date Jul 14, 1998
- Mark H. Krietzmen
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Animal feeding bowl with protective cover movable by animal
- Patent number 5,649,499
- Issue date Jul 22, 1997
- Mark H. Krietzman
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information Patent Grant
Suspended feline toy and exerciser
- Patent number 5,474,032
- Issue date Dec 12, 1995
- Mark H. Krietzman
- A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING

Patents Applicationslast 30 patents

Information Patent Application
Multi-layered thin flat illuminator
- Publication number 20030123253
- Publication date Jul 3, 2003
- Mark Howard Krietzman
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Flat illuminator with flexible integral switching arm
- Publication number 20030107884
- Publication date Jun 12, 2003
- Mark Howard Krietzman
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
IEEE 1394 or USB powered computer lights
- Publication number 20020186563
- Publication date Dec 12, 2002
- Mark Howard Krietzman
- F21 - LIGHTING
Information Patent Application
Variable output laser illuminator and targeting device
- Publication number 20020097587
- Publication date Jul 25, 2002
- Mark Howard Krietzman
- G02 - OPTICS
Information Patent Application
Slide-switched flat illuminator
- Publication number 20010048597
- Publication date Dec 6, 2001
- Mark Howard Krietzman
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
IEEE 1394 or USB powered computer light
- Publication number 20010043468
- Publication date Nov 22, 2001
- Mark Howard Krietzman
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Application
Thin flat illuminator
- Publication number 20010040801
- Publication date Nov 15, 2001
- Mark Howard Krietzman
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
Information Patent Application
Side switched flat illuminator
- Publication number 20010030858
- Publication date Oct 18, 2001
- Mark Howard Krietzman
- E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES

Yu-Hsin Chen

Person

Patents Grantslast 30 patents

IEEE 1394 or USB powered computer lights

Thin flat illuminator

Slide-switched flat illuminator

Flat credit card illuminator with flexible integral switching arm

Over-the-door cat scratching post

Multi-apertured feline toy and exercise device

Under-the-door mounted pet toy

Feline exercise and play target object

Animal feeding bowl with protective cover movable by animal

Suspended feline toy and exerciser

Patents Applicationslast 30 patents

Multi-layered thin flat illuminator

Flat illuminator with flexible integral switching arm

IEEE 1394 or USB powered computer lights

Variable output laser illuminator and targeting device

Slide-switched flat illuminator

IEEE 1394 or USB powered computer light

Thin flat illuminator

Side switched flat illuminator