Kensington, NH, United States of America

David W Johnston

USPTO Granted Patents = 17 (Patent Applications = 3)

EPO Patents = 3 (Patent Applications = 2)

Average Co-Inventor Count = 2.3

ph-index = 2

Forward Citations = 40(Granted Patents)

Location History:

Kensington, NH (US) (2003 - 2021)
Exeter, NH (US) (2023)

Company Filing History:

Osram Opto Semiconductors Gmbh

Years Active: 2003-2023

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17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11584882 - Wavelength converter; method of its making and light-emitting device incorporating the element (2023-02-21),

2. 10950760 - Two component glass body for tape casting phosphor in glass LED converters (2021-03-16),

3. 10487390 - Method of bonding a laser activated remote phosphor assembly, method of manufacture and a laser activated remote phosphor assembly (2019-11-26),

4. 10472735 - Method of making a single crystal wavelength conversion element, single crystal wavelength conversion element, and light source containing same (2019-11-12),

5. 10221353 - Wavelength converting compositions, wavelength converters and devices including the same (2019-03-05),

6. 9553246 - Silicone-grafted core-shell particles, polymer matrix, and LED containing same (2017-01-24),

7. 9515235 - Silicone-grafted core-shell particles, polymer matrix, and LED containing same (2016-12-06),

8. 9240517 - Strain relief superlattices and optoelectronic devices including the same (2016-01-19),

9. 8827498 - LED light source having glass heat pipe with fiberglass wick (2014-09-09),

10. 8378571 - Precision mercury dispenser using wire (2013-02-19),

11. 7812533 - Mercury dispenser, method of making mercury dispenser and method of dosing mercury into ARC discharge lamp (2010-10-12),

12. 7417363 - Containment vessel for light source capsules operating at other than the pressure of a surrounding gas (2008-08-26),

13. 7236241 - Method of making a standard tool for calibrating stress analysis measuring devices and a set of the standard tools (2007-06-26),

14. 7092092 - Hand-carried LED polariscope (2006-08-15),

15. 7061612 - LED Polarimeter (2006-06-13),

Title: The Innovative Contributions of David W. Johnston

Introduction

David W. Johnston is a notable inventor based in Kensington, NH (US), recognized for his significant contributions to the field of light-emitting devices. With a total of 17 patents to his name, Johnston has made remarkable advancements in wavelength conversion technology.

Latest Patents

Among his latest patents is a wavelength converter that includes a non-luminescent substrate layer and at least one polysiloxane layer, which contains a phosphor material. This invention aims to enhance the efficiency of light-emitting devices. Another notable patent is for a two-component glass body designed for tape casting phosphor in glass LED converters. This invention outlines a method for preparing a glass device through a series of steps, including blending, grinding, casting, and drying the mixture to create a functional glass device.

Career Highlights

Throughout his career, David W. Johnston has worked with prominent companies such as Osram Sylvania Inc. and Osram Opto Semiconductors GmbH. His experience in these organizations has allowed him to develop and refine his innovative ideas in the field of optoelectronics.

Collaborations

Johnston has collaborated with talented individuals in his field, including Gregory Zaslavsky and Maxim N. Tchoul. These partnerships have contributed to the successful development of his inventions and patents.

Conclusion

David W. Johnston's work exemplifies the spirit of innovation in the realm of light-emitting technology. His patents and collaborations reflect a commitment to advancing the field and improving the efficiency of light-emitting devices.

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3 patents pending:

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3 patents (EPO):

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2 patents pending (EPO):

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