David C Johnson

This inventor holds 13 USPTO granted patents. Top assignees: Hewlett-Packard Development Company, L.p., Hewlett-Packard Company. Active years: 2000-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: David C Johnson. Retrieved from https://idiyas.com/inventor/david-c-johnson-b55au40e

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

USPTO Granted Patents = 13

% Patents Active = 76.9

Average Co-Inventor Count = 2.6

ph-index = 5

Forward Citations = 202(Granted Patents)

Company Filing History:

8 out of 27,679

Hewlett-Packard Development Company, L.p.

patents

5 out of 9,639

Hewlett-Packard Company

patents

Years Active: 2000-2007

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13 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 7156491 - Separable key for establishing detachable printer component compatibility with a printer (2007-01-02),

2. 6969148 - Pivoting on-axis ink reservoir for inkjet printer (2005-11-29),

3. 6827432 - Replaceable ink container for an inkjet printing system (2004-12-07),

4. 6779874 - Device for ensuring proper toe-heel installation of a detachable printer component (2004-08-24),

5. 6755516 - Latch and handle arrangement for a replaceable ink container (2004-06-29),

6. 6729714 - Separable key for establishing detachable printer component compatibility with a printer (2004-05-04),

7. 6676426 - Electrical connector with baised positioning (2004-01-13),

8. 6551148 - Electrical connector with minimized non-target contact (2003-04-22),

9. 6375315 - Replaceable ink container for an inkjet printing system (2002-04-23),

10. 6302535 - Ink container configured to establish reliable electrical connection with a receiving station (2001-10-16),

11. 6293665 - Dual capillarity ink accumulator for ink-jet (2001-09-25),

12. 6039443 - Apparatus and method of priming ink supply tubes in an ink jet printer (2000-03-21),

13. 6019459 - Dual capillarity ink accumulator for ink-jet (2000-02-01),

Title: The Innovative Contributions of David C Johnson

Introduction

David C Johnson is a notable inventor based in Portland, OR (US), recognized for his significant contributions to the field of printing technology. With a total of 13 patents to his name, Johnson has developed innovative solutions that enhance the functionality and compatibility of printer components.

Latest Patents

Among his latest patents is the invention of a separable key for establishing detachable printer component compatibility with a printer. This invention features a separable key element that is operably secured to a printer component base, allowing only compatible printer components to be installed. The key indicates the required characteristics of the printer component, ensuring that only compatible elements can be secured to the base. Additionally, the key element includes a display surface for visually identifying these characteristics. Another notable patent is the pivoting on-axis ink reservoir for inkjet printers. This design allows the ink reservoir to pivot away from the printhead, providing easy access without the need to remove the reservoir from the carriage. This innovative approach enhances user convenience and operational efficiency.

Career Highlights

David C Johnson has had a distinguished career, working with prominent companies such as Hewlett-Packard Development Company, L.P. and Hewlett-Packard Company. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking advancements in printing technology.

Collaborations

Throughout his career, Johnson has collaborated with talented individuals, including Scott D Sturgeon and Charles R Steinmetz. These collaborations have fostered an environment of innovation and creativity, leading to the development of impactful inventions.

Conclusion

David C Johnson's contributions to the field of printing technology are marked by his innovative patents and collaborative efforts. His work continues to influence the industry, showcasing the importance of creativity and technical expertise in driving advancements.

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]