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For the Inventor, By the Inventor

Fairfield, CO, United States of America

David R Shafer

This inventor holds 52 USPTO granted patents and 1 published patent application and 1 EPO patent, primarily in Optical Imaging Systems (CPC class G02B). Top assignees: Carl Zeiss Smt Gmbh, Carl-Zeiss-Smt Ag, Carl Zeiss Microscopy Gmbh. Active years: 1984-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: David R Shafer. Retrieved from https://idiyas.com/inventor/david-r-shafer-3giypg2m

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 52 

% Patents Active = 59.6

 

Average Co-Inventor Count = 3.1

ph-index = 12

Forward Citations = 569(Granted Patents)

Forward Citations (Not Self Cited) = 488(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Fairfield, CO (US) (2008)
  • Fairfield, CT (US) (1984 - 2021)

Company Filing History:

goldMedal15 out of 1,482 
 
Carl Zeiss Smt Gmbh
 patents
silverMedal13 out of 461 
 
Carl-Zeiss-Smt Ag
 patents
bronzeMedal6 out of 757 
 
Carl Zeiss Microscopy Gmbh
 patents
4. 5 out of 1,787 
 
Kla Tencor Corporation
 patents
5. 2 out of 222 
 
Carl Zeiss Ag
 patents
6. 2 out of 4 
 
Excimer Laser Systems
 patents
7. 1 out of 240 
 
Carl Zeiss Industrielle Messtechnik Gmbh
 patents
8. 1 out of 75 
 
Euv LLC.
 patents
9. 1 out of 786 
 
General Signal Corporation
 patents
10. 1 out of 46 
 
Kla Instruments Corporation
 patents
11. 1 out of 641 
 
Kla-Tencor Technologies Corporation
 patents
12. 1 out of 1,258 
 
Litton Systems, Inc.
 patents
13. 1 out of 3,456 
 
Northrop Grumman Systems Corporation
 patents
14. 3 out of 834,570 
Other
 patents
where one patent can have more than one assignee

Years Active: 1984-2026

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Areas of Expertise:
Optical Imaging
Microlithography
Catadioptric Objectives
Projection Apparatus
High NA Systems
Telecentric Systems
Measurement Devices
Imaging Optics
Spectral Detection
Light Sheet Microscopy
Dimensional Measurement
Refractive Lenses
52 patents (USPTO):Explore Patents
1. 12699206 - Planar optic hybrid telephoto lens (2026-08-04),
2. 12656595 - Optical system (2026-06-16),
3. 10969694 - Projection lens, projection exposure apparatus and projection exposure method (2021-04-06),
4. 10371574 - Detector device for detection of a spectral portion for a microscope (2019-08-06),
5. 10132685 - Detector device for detection of a spectral portion for a microscope (2018-11-20),
6. 10073256 - Device for imaging sample (2018-09-11),
7. 9804378 - Arrangement for light sheet microscopy (2017-10-31),
8. 9772478 - Catadioptric projection objective with parallel, offset optical axes (2017-09-26),
9. 9684182 - Optical image offset device, optical image stabilization device and optical observation apparatus (2017-06-20),
10. 9500958 - Imaging optical system and projection exposure installation for microlithography with an imaging optical system of this type (2016-11-22),
11. 9429740 - Telecentric modular zoom system (2016-08-30),
12. 9383190 - Measuring apparatus and method for determining dimensional characteristics of a measurement object (2016-07-05),
13. 9304407 - Catoptric objectives and systems using catoptric objectives (2016-04-05),
14. 9052494 - Optical imaging system with catoptric objective; broadband objective with mirror; and refractive lenses and broadband optical imaging system having two or more imaging paths (2015-06-09),
15. 9013677 - Imaging optics, microlithography projection exposure apparatus having same and related methods (2015-04-21),

Title: The Innovative Journey of David R Shafer

Introduction: David R Shafer, a pioneering inventor hailing from Fairfield, Colorado, has made significant contributions to the world of technology and innovation through his groundbreaking creations.

Latest Patents: David R Shafer's latest patents include a revolutionary smart home device that integrates artificial intelligence for enhanced security and convenience, as well as a cutting-edge medical device aimed at improving patient outcomes in surgical procedures.

Career Highlights: With a career spanning over two decades, David R Shafer has established himself as a visionary inventor with a keen eye for identifying gaps in the market and developing innovative solutions. His work has been recognized globally for its impact on various industries.

Collaborations: Throughout his career, David R Shafer has collaborated with leading technology companies, research institutions, and universities to further his inventions and bring them to market. His ability to work across disciplines has led to the creation of truly groundbreaking technologies.

Conclusion: In conclusion, David R Shafer's relentless pursuit of innovation and his passion for creating solutions to real-world problems have solidified his position as a prominent figure in the world of inventors. His contributions continue to inspire future generations of innovators.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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