John Robert Sheahan

This inventor holds 100 USPTO granted patents and 3 published patent applications, plus 2 CIPO patents and 2 EPO patents, primarily in Monochrome Printing (CPC class B41J2-04586). Top assignees: Silverbrook Research Pty Ltd, Memjet Technology Limited, Zamtec Limited. Active years: 2006-2023.

USPTO Granted Patents = 100 (Patent Applications = 3)

% Patents Active = 47.0

CIPO Patents = 2 (Patent Applications = 1)

EPO Patents = 2 (Patent Applications = 2)

Average Co-Inventor Count = 6.0

ph-index = 15

Forward Citations = 692(Granted Patents)

Forward Citations (Not Self Cited) = 408(Dec 10, 2025)

Inventors with similar research interests:

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Location History:

Balmain, NSW, AU (2007)
Blamain, AU (2011)
Balmain, AU (2006 - 2013)
North Ryde, AU (2017 - 2023)

Company Filing History:

87 out of 4,682

Silverbrook Research Pty Ltd

patents

5 out of 281

Memjet Technology Limited

5. 1 out of 834,411

Other

patents

Years Active: 2006-2023

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Areas of Expertise:

Monochrome Printing

Printhead Design

Inkjet Technologies

Single-Pass Printing

Print Engine Controller

Thermal Sensors

Nozzle Fault Correction

Temperature Based Ejection

Print Data Generation

Integrated Circuit

Nozzle Redundancy

Printhead IC

100 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11820139 - Print chip configured for single-pass monochrome printing at high speeds (2023-11-21),

2. 11813861 - Method for single-pass monochrome printing at high speeds (2023-11-14),

3. 11772376 - Sub-row firing method for single-pass monochrome printing at high speeds (2023-10-03),

4. 10029458 - Method of generating print data for inkjet printhead (2018-07-24),

5. 9545787 - Method of generating print data for inkjet printhead (2017-01-17),

6. 8388109 - Printhead with controller for generating combined print data and clock signal (2013-03-05),

7. 8382246 - Printhead having mirrored rows of print nozzles (2013-02-26),

8. 8308274 - Printhead integrated circuit with thermally sensing heater elements (2012-11-13),

9. 8287077 - Printhead IC having temperature based ejection (2012-10-16),

10. 8282184 - Print engine controller employing accumulative correction factor in pagewidth printhead (2012-10-09),

11. 8123318 - Printhead having controlled nozzle firing grouping (2012-02-28),

12. 8079663 - Printhead having mirrored rows of print nozzles (2011-12-20),

13. 8075099 - Printer with controller for generating combined print data and clock signal (2011-12-13),

14. 8016389 - Printhead IC with staggered nozzle firing pulses (2011-09-13),

15. 8016379 - Printhead controller for controlling printhead on basis of thermal sensors (2011-09-13),

Of course! Here is the article about inventor John Robert Sheahan:

Title: The Innovative Mind of John Robert Sheahan from Balmain, AU

Introduction: John Robert Sheahan, a prolific inventor based in Balmain, AU, has left a lasting impact on the field of technology with his 95 patents. His groundbreaking work has revolutionized the printing industry and beyond.

Latest Patents: Among his recent patents is the "Printhead with controller for generating combined print data and clock signal". This inkjet printhead features a support member with multiple printhead IC's, each equipped with an array of nozzles for precise printing onto various substrates. Another notable patent is the "Printhead having mirrored rows of print nozzles", showcasing his innovative approach to printhead design.

Career Highlights: John Robert Sheahan has made significant contributions during his tenure at Silverbrook Research Pty Ltd and Zamtec Limited. His expertise and creativity have driven numerous technological advancements in these renowned companies.

Collaborations: Throughout his career, Sheahan has collaborated closely with esteemed professionals such as Mark Jackson Pulver and Michael John Webb. Together, they have brought various groundbreaking concepts to life, solidifying their place in the realm of innovation.

Conclusion: In conclusion, John Robert Sheahan stands as a visionary inventor whose dedication to advancing technology has led to the creation of numerous patents that continue to shape the industry. His relentless pursuit of innovation sets him apart as a true pioneer in the field, inspiring future generations to push the boundaries of what is possible.

I hope you find this article about John Robert Sheahan insightful and engaging! If you have any more requests or need further information, feel free to ask.