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For the Inventor, By the Inventor

Green Island, NY, United States of America

Crystal Is, Inc.


USPTO Granted Patents = 96

% Expired Patents = 11.5



Trademarks = 4

Forward Citations = 737

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46 inventors (with patents filed for the assignee):

goldMedal Leo J Schowalter (85 out of 85 patents)

silverMedal Robert T Bondokov (44 out of 44 patents)

bronzeMedal Glen Alfred Slack (36 out of 40 patents)

4.  James R Grandusky (30 out of 30 patents)

5.  Jianfeng Chen (29 out of 29 patents)

6.  Kenneth E Morgan (28 out of 28 patents)

7.  Shailaja P Rao (16 out of 16 patents)

8.  Shawn Robert Gibb (16 out of 16 patents)

9.  Craig Moe (11 out of 11 patents)

10.  Shichao Wang (11 out of 11 patents)

11.  Keisuke Yamaoka (10 out of 34 patents)

12.  Ken Kitamura (9 out of 13 patents)

13.  Masato Toita (9 out of 9 patents)

14.  Joseph A Smart (9 out of 17 patents)

15.  Yuting Wang (7 out of 23 patents)


Core Competencies:
Aluminum Nitride
UV-Transparent
Defect Reduction
Single Crystals
Photon Extraction
Thermal Control
Doped Crystals
Epitaxial Layers
Light-Emitting Devices
Fluid Treatment
Disinfection
UVC Dosing

96 patents:

1. 12344957 - Tungsten-infused aluminum nitride crystals and methods of forming them (2025-07-01),
2. 12343668 - Air disinfection chamber (2025-07-01),
3. 12264410 - Aluminum nitride crystals having low urbach energy and high transparency to deep-ultraviolet wavelengths (2025-04-01),
4. 12227873 - Aluminum nitride single crystals having large crystal augmentation parameters (2025-02-18),
5. 12195362 - Periodic UVC dosing (2025-01-14),
6. 12163250 - Control of basal plane dislocations in large aluminum nitride crystals (2024-12-10),
7. 11990562 - Ultraviolet light-emitting devices having enhanced light output (2024-05-21),
8. 11942569 - Methods and packages for enhancing reliability of ultraviolet light-emitting devices (2024-03-26),
9. 11939700 - Impurity control during formation of aluminum nitride crystals and thermal treatment of aluminum nitride crystals (2024-03-26),
10. 11913136 - Thermal control for formation and processing of aluminum nitride (2024-02-27),
11. 11840773 - Aluminum nitride single crystals having controllable color and methods of forming them (2023-12-12),
12. 11828002 - Large, UV-transparent aluminum nitride single crystals (2023-11-28),
13. 11578425 - Thermal control for formation and processing of aluminum nitride (2023-02-14),
14. 11555256 - Aluminum nitride crystals having low urbach energy and high transparency to deep-ultraviolet wavelengths (2023-01-17),
15. 11530141 - Systems and methods for fluid disinfection with ultraviolet light (2022-12-20),
Crystal Is, Inc. is a technology company based in Green Island, NY, specializing in the development and manufacturing of aluminum nitride crystals. The company focuses on advancing the properties of these crystals, which are known for their UV transparency and thermal control capabilities. Their expertise includes defect reduction, the production of single crystals, and the creation of doped crystals and epitaxial layers, which are essential for various applications in optoelectronics and high-performance devices.
Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Sep 29 2026

Crystal Is, Inc.
96 Patents

#1 in Green Island, NY

#241 in New York

#3,912 in US

#8,040 in the World

Green Island, NY (US)
Green Island, NY, United States of America

Crystal Is, Inc.

Forward Citations = 737

46 inventors:

goldMedal Leo J Schowalter (85 out of 85 patents)

silverMedal Robert T Bondokov (44 out of 44 patents)

bronzeMedal Glen Alfred Slack (36 out of 40 patents)

4.  James R Grandusky (30 out of 30 patents)

5.  Jianfeng Chen (29 out of 29 patents)

Please report any incorrect information to [email protected]
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