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Inventor: Willy P. Schreurs


Address: Danvers, MA
No. of patents: 10
Last patent issue date: 07/20/1982

NumberTitleIssue Date
4340512Method of providing a universal coating for fluorescent lamps
A method of preparing phosphor suspensions for coating fluorescent lamps wherein the temporary organic binder is an association compound of purified carboxy methyl cellulose and polyethylene oxide in such proportions as to avoid the gelation caused by ion...
07/20/1982
4308186Reflector coating composition for fluorescent lamps
An essentially water-base coating to form reflective films on the inner wall of fluorescent lamps is prepared from a dispersion of TiO2 in a vehicle comprising a water solution of an organic binder, a volatile organic non-solvent of the binder ...
12/29/1981
4289991Fluorescent lamp with a low reflectivity protective film of aluminum oxide
The light output and lumen maintenance of fluorescent lamps with or without a conductive film, are improved by coating the glass envelope or the conductive glass envelope with a thin transparent film of Al2 O3. The alumina film is ob...
09/15/1981
4251569Method of coating arc discharge lamp electrode
An arc discharge lamp electrode is coated by applying thereto a suspension of alkaline earth compounds in a liquid vehicle of lignosulfonic acid, ammonia and ethylene glycol....
02/17/1981
4148935Method of making fluorescent lamp
A coating is deposited on the inner wall of a fluorescent lamp bulb from a suspension of particulate matter in a liquid vehicle of polyoxyethylene, hydroxyethylmethyl cellulose and an insolubilizing agent dissolved in water. After drying and low temperatu...
04/10/1979
4147816Method of improving the output and maintenance of a fluorescent lamp
In the manufacture of a fluorescent lamp having lead activated barium mesosilicate phosphor coated on the inner wall of the lamp envelope, ammonium chloride or other heat decomposable chlorides are added to the phosphor coating suspension in order to impr...
04/03/1979
4061946Fluorescent lamp having zero back brightness
In a directional fluorescent lamp having a reflector layer between the phosphor and the glass envelope wall, there is a dark, nonreflecting, light-absorbing layer between the reflector layer and the glass to prevent light escaping from the back of the lam...
12/06/1977
4058639Method of making fluorescent lamp
A film of colloidal alumina is deposited on a fluorescent lamp envelope from a suspension containing nitrocellulose resin. After the film has dried, a phoshor coating is deposited thereon without the need of baking the film....
11/15/1977
4055781Special purpose fluorescent lamp
A fluorescent lamp which enhances the colors blue and red while maintaining an acceptable overall color rendition contains a four component phosphor blend comprising three broad band emitting phosphors and a narror band emitting phosphor which peaks in th...
10/25/1977
3987331Ultraviolet emitting fluorescent lamp having internal reflector film
An ultraviolet emitting fluorescent lamp contains an internal reflector film to increase the forward flux of the lamp. The reflector film comprises a layer of zirconia on the inside glass wall of the lamp envelope....
10/19/1976
 
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