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For the Inventor, By the Inventor

Princeton, NJ, United States of America

Karl G Hernqvist

USPTO Granted Patents = 20

Average Co-Inventor Count = 1.1

ph-index = 5

Forward Citations = 76(Granted Patents)


Location History:

  • Princeton Township, Mercer County, NJ (US) (1987)
  • Princeton, NJ (US) (1976 - 1989)

Company Filing History:

goldMedal17 out of 5,349 
 
Rca Inc.
 patents
silverMedal2 out of 271 
 
Rca Licensing Corporation
 patents
bronzeMedal1 out of 832,680 
Other
 patents

Years Active: 1976-1989

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20 patents (USPTO):Explore Patents
1. 4883438 - Method for spot-knocking an electron gun mount assembly of a CRT (1989-11-28),
2. 4883437 - Method for spot-knocking an electron gun mount assembly of a crt (1989-11-28),
3. 4720654 - Modular electron gun for a cathode-ray tube and method of making same (1988-01-19),
4. 4634924 - Electron gun having cylindrical focus lens (1987-01-06),
5. 4604548 - Electron gun with afterglow eliminator (1986-08-05),
6. 4515569 - Method of electrically processing a CRT mount assembly to reduce arcing (1985-05-07),
7. 4473774 - CRT with internal neck coating for suppressing arcing therein (1984-09-25),
8. 4431939 - Structure and method for eliminating blocked apertures caused by charged (1984-02-14),
9. 4406637 - Processing the mount assembly of a CRT to suppress afterglow (1983-09-27),
10. 4361370 - Apparatus and method for cleaning shadow masks in color picture tubes (1982-11-30),
11. 4288719 - CRT With means for suppressing arcing therein (1981-09-08),
12. 4285990 - Method for coating a selected portion of the internal neck surface of a (1981-08-25),
13. 4157253 - Method of reducing absorption losses in fused quartz and fused silica (1979-06-05),
14. 4156826 - Mercury arc lamps (1979-05-29),
15. 4010363 - Laser alignment system (1977-03-01),

Title: Karl G Hernqvist: A Pioneer in CRT Technology

Introduction

Karl G Hernqvist, based in Princeton, NJ, is an accomplished inventor with a remarkable portfolio of 20 patents. His innovative work primarily focuses on developments within the realm of cathode-ray tube (CRT) technology, particularly related to electron gun assemblies.

Latest Patents

Hernqvist's recent contributions include a groundbreaking method for spot-knocking an electron gun mount assembly of a CRT. This novel procedure involves applying a spot-knocking voltage between a first and second anode and a first focus electrode, with the remaining gun elements, including a heater, cathode, control electrode, screen electrode, and second focus electrode, remaining electrically floating. Additionally, he developed another method for spot-knocking that features a gun axis in an evacuated CRT. This innovation involves interconnecting several gun components and introducing a magnetic field along the gun axis to facilitate the initiation of arcs within the designated alignment while inhibiting arcs in other directions.

Career Highlights

Karl G Hernqvist has had significant stints with notable companies, including RCA Inc. and RCA Licensing Corporation. Throughout his career, his inventive spirit has led to advancements that continue to impact the field of electronic displays.

Collaborations

Hernqvist has collaborated with esteemed colleagues, such as Donald Chester Pultorak and Arthur Herbert Firester. Their combined expertise in the field has fostered innovations that have enhanced CRT technology and its applications.

Conclusion

Karl G Hernqvist exemplifies the innovative spirit of his generation, leaving an indelible mark on the technology of cathode-ray tubes. His patents not only reflect his technical skill but also set the stage for future advancements in electron gun designs and functionalities. Through his career and collaborations, Hernqvist continues to inspire innovation in the field of electronic display technologies.

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