This inventor holds 3 USPTO granted patents and 1 published patent application. Top assignees: U.S. Philips Corporation, Koninklijke Philips Corporation N.v.. Active years: 1994-2003.
Location History:
- Aachen, DE (1994 - 1999)
- Würselen, DE (2003)
Company Filing History:
2 out of 14,087 
1 out of 21,871 
Years Active: 1994-2003
Title: The Innovations of Stefan Gruhlke
Introduction
Stefan Gruhlke is a notable inventor based in Aachen, Germany. He has made significant contributions to the field of lighting and display technology. With a total of 3 patents, his work reflects a commitment to innovation and quality.
Latest Patents
One of Gruhlke's latest patents is a pigment-coated lamp and luminaire emitting colored light. This invention features a colored luminaire, particularly a signaling light for automobiles, equipped with a lamp and a luminaire cover. The lamp contains a bulb coated with a first layer of pigment, selected from perylene, perinone, isoindoline, and thioindigo pigments. This design ensures a long useful life, as it is resistant to UV radiation, moisture, and spraying salt, while also withstanding temperatures between 250 and 350°C. Additionally, colored luminaires with these bulb coatings meet the color standards for automobile luminaires. Another significant patent is a display screen comprising an adhesive layer. This flat display screen includes a glass faceplate with a transparent electrode layer made of a metal oxide, such as indium-doped tin oxide (ITO), along with a phosphor layer and an adhesive intermediate layer of alkali silicate.
Career Highlights
Stefan Gruhlke has worked with prominent companies, including U.S. Philips Corporation and Koninklijke Philips Corporation N.V. His experience in these organizations has allowed him to develop and refine his innovative ideas in lighting and display technologies.
Collaborations
Throughout his career, Gruhlke has collaborated with notable colleagues, including Helmut Bechtel and Joachim F. Opitz. These partnerships have contributed to the advancement of his inventions and the overall progress in the field.
Conclusion
Stefan Gruhlke's contributions to the fields of lighting and display technology are noteworthy. His innovative patents demonstrate a blend of creativity and technical expertise. His work continues to influence the industry and inspire future innovations.