NORTH AMERICAN PHILIPS ELECTRIC CORP.

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
H01J ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS 1127
 
  
 
H05B ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR 1110

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
RE30687 Energy saving device for a standard fluorescent lamp systemDec 04, 79Jul 21, 81[H01J, H05B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4871944 Compact lighting unit having a convoluted fluorescent lamp with integral mercury-vapor pressure-regulating means, and method of phosphor-coating the convoluted envelope for such a lampExpiredDec 12, 80Oct 03, 89[H01J]
4742268 High color rendering calcium-containing metal halide lampExpiredOct 20, 86May 03, 88[H01J]
4643690 Method of manufacturing metal halide lampExpiredSep 03, 85Feb 17, 87[H01J]
D286914 Air-cooled compact electric lampExpiredMar 12, 85Nov 25, 86[]
D286915 Air-cooled compact electric lampExpiredMar 12, 85Nov 25, 86[]
4538091 High-pressure sodium lamp spring clip cross piece for electrode and end plug supportExpiredFeb 16, 83Aug 27, 85[H01J]
4524299 Fluorescent sunlamp having controlled ultraviolet outputExpiredApr 08, 82Jun 18, 85[H01J]
4516446 Precision rotating rod guideExpiredFeb 14, 83May 14, 85[B23B, B65H]
D278462 Air-cooled compact electric lampExpiredJul 26, 82Apr 16, 85[]
4506195 Apparatus for operating HID lamp at high frequency with high power factor and for providing standby lightingExpiredFeb 04, 83Mar 19, 85[H05B]
4503360 Compact fluorescent lamp unit having segregated air-cooling meansExpiredJul 26, 82Mar 05, 85[H01J]
4501992 Energy conserving instant-start series-sequence fluorescent lamp system and fluorescent lamp with overcurrent protectionExpiredAug 23, 82Feb 26, 85[H05B]
4498580 Lamp bulb carton, and resulting lamp bulb packageExpiredJan 13, 83Feb 12, 85[B65D]
D277412 Compact electric discharge lampExpiredJul 26, 82Jan 29, 85[]
D277033 Air-cooled compact electric lampExpiredJul 26, 82Jan 01, 85[]
4491766 High pressure electric discharge lamp employing a metal spiral with positive potentialExpiredJun 24, 82Jan 01, 85[H01J]
4479074 High intensity vapor discharge lamp with sintering aids for electrode emission materialsExpiredSep 02, 82Oct 23, 84[H01J]
4475065 Method of operating HID sodium lamp to minimize lamp voltage variation throughout lamp lifeExpiredSep 02, 82Oct 02, 84[H05B]
D275327 Compact fluorescent lamp unitExpiredNov 14, 83Aug 28, 84[]
4463277 Compact halogen-cycle incandescent lamp, and lamp unit utilizing such lamp as a light sourceExpiredNov 15, 82Jul 31, 84[H01K]

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