Inventor

Helmut Bechtel

Inventor

Roetgen, DE

Overview

19→

Patents

1994–2012

Patent span

Electricity

Primary field (CPC H)

Patents· 19 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H01Jprimary

H01JElectric discharge tubes or discharge lamps29%

C09KMaterials for miscellaneous applications, not provided for elsewhere24%

H10KOrganic electric solid-state devices12%

H10HInorganic light-emitting semiconductor devices having potential barriers9%

Y10TTechnical subjects covered by former us classification6%

B82YSpecific uses or applications of nanostructures3%

C03CChemical composition of glasses, glazes or vitreous enamels3%

C04BLime, magnesia3%

G01NInvestigating or analysing materials by determining their chemical or physical properties3%

G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein3%

PatentTitleYear

8,227,758'Device and method for determining the conversion power of conversion elements'2012 8,164,250'Light emitting device with improved conversion layer'2012 7,969,089'LED with improved light emission profile'2011 7,800,123'Electroluminescence device'2010 7,750,357'LED with improved light emittance profile'2010 7,642,714'Electroluminescent device with a transparent cathode'2010 7,591,962'Low-pressure mercury vapor discharge lamp comprising UV-A phosphor'2009 7,285,909'Electroluminescent device with a color filter'2007 6,753,649'Plasma picture screen with UV light reflecting front plate coating'2004 6,654,079'Liquid crystal color display screen comprising a phosphor layer'2003 6,509,685'Plasma display screen comprising a red phosphor'2003 6,469,434'Zinc silicate luminescent materials and related luminescent screen products'2002 5,998,047'Aluminate phosphor with a polyphosphate coating'1999 5,936,340'Display screen comprising an adhesive layer'1999 5,879,795'Luminescent screen containing phosphor particles coated with MoO.sub.3'1999 5,760,542'Color display device having short decay phosphors'1998 5,739,632'Luminescent phosphor screen containing catena-polyphosphate'1998 5,684,358'Luminescent screen'1997 5,360,361'Method of manufacturing a display tube'1994

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1994–1999Patents assigned to PHILIPS CORP (7)· patent assignee history

1994–2012Based in Roetgen, DE· patent location history

1997–2007Based in Aachen, DE· patent location history

2002–2012Patents assigned to KONINKL PHILIPS ELECTRONICS NV (12)· patent assignee history

2012Patents assigned to BECHTEL HELMUT (2)· patent assignee history

2012Patents assigned to SCHMIDT PETER (2)· patent assignee history

2012Patents assigned to MEYER JORG (1)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
KONINKL PHILIPS ELECTRONICS NV	12	2002–2012
PHILIPS CORP	7	1994–1999
BECHTEL HELMUTself	2	2012
SCHMIDT PETER	2	2012
MEYER JORG	1	2012

Locations

Location	Patents	Span
Roetgen, DE	17	1994–2012
Aachen, DE	2	1997–2007