Donald P. Northrop

Person

Glen Rock, NJ, US

People

Patents Grantslast 30 patents

Information Patent Grant
Fluorescent lamp capable of operating on multiple ballast system
- Patent number 5,498,924
- Issue date Mar 12, 1996
- Duro-Test Corp.
- Donald P. Northrop
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Rare earth phosphor blends for fluorescent lamp using four to five...
- Patent number 5,122,710
- Issue date Jun 16, 1992
- Duro-Test Corporation
- Donald Northrop
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Fluorescent lamp with protective shield
- Patent number 4,924,368
- Issue date May 8, 1990
- Duro-Test Corporation
- Donald P. Northrop
- F21 - LIGHTING
Information Patent Grant
Phosphor blend for broad spectrum fluorescent lamp
- Patent number 4,891,550
- Issue date Jan 2, 1990
- Duro-Test Corporation
- Donald Northrop
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Socket adaptor for fluorescent lamp
- Patent number 4,758,173
- Issue date Jul 19, 1988
- Duro-Test Corporation
- Donald Northrop
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Compact fluorescent lamp with outer envelope
- Patent number 4,745,323
- Issue date May 17, 1988
- Duro-Test Corporation
- Donald P. Northrop
- F21 - LIGHTING
Information Patent Grant
Fluoresent lamp with double cathode and probe
- Patent number 4,734,616
- Issue date Mar 29, 1988
- Duro-Test Corporation
- Donald P. Northrop
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Fluorescent lamp with reduced wattage consumption
- Patent number 4,032,814
- Issue date Jun 28, 1977
- Duro-Test Corporation
- Joel Shurgan
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Fluorescent lamp with reduced wattage consumption having electrode...
- Patent number 4,032,813
- Issue date Jun 28, 1977
- Duro-Test Corporation
- Joel Shurgan
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Fluorescent lamp with envelope grooves
- Patent number 3,988,633
- Issue date Oct 26, 1976
- Duro-Test Corporation
- Joel Shurgan
- C03 - GLASS MINERAL OR SLAG WOOL

Donald P. Northrop

Person

Patents Grantslast 30 patents

Fluorescent lamp capable of operating on multiple ballast system

Rare earth phosphor blends for fluorescent lamp using four to five...

Fluorescent lamp with protective shield

Phosphor blend for broad spectrum fluorescent lamp

Socket adaptor for fluorescent lamp

Compact fluorescent lamp with outer envelope

Fluoresent lamp with double cathode and probe

Fluorescent lamp with reduced wattage consumption

Fluorescent lamp with reduced wattage consumption having electrode...

Fluorescent lamp with envelope grooves