St. Charles, MO, United States of America

Donald D Foster

This inventor holds 119 USPTO granted patents and 2 published patent applications, plus 26 CIPO patents and 4 EPO patents, primarily in Trigger Sprayer Technology (CPC class 2223831). Top assignees: Contico International LLC, Continental Afa Dispensing Company, Continental Sprayers International, Inc.. Active years: 1991-2018.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Donald D Foster. Retrieved from https://idiyas.com/inventor/donald-d-foster

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

Calculating rank

USPTO Granted Patents = 119 (Patent Applications = 2)

% Patents Active = 96.6

CIPO Patents = 26 (Patent Applications = 20)

EPO Patents = 4 (Patent Applications = 1)

Average Co-Inventor Count = 1.7

ph-index = 27

Forward Citations = 2,266(Granted Patents)

Forward Citations (Not Self Cited) = 2,140(Dec 10, 2025)

Inventors with similar research interests:

Company Filing History:

57 out of 153

Contico International LLC

patents

22 out of 28

Continental Afa Dispensing Company

patents

18 out of 21

Continental Sprayers International, Inc.

patents

4. 16 out of 109

Meadwestvaco Calmar Gmbh

Continental Sprayers Internatioal, Inc.

patent

7. 1 out of 121

Silgan Dispensing Systems Corporation

patents

8. 1 out of 7

Westrock Dispensing Systems, Inc.

patents

where one patent can have more than one assignee

Years Active: 1991-2018

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Areas of Expertise:

Trigger Sprayer

Foaming Liquid Dispenser

Ergonomic Trigger

Dual Chamber Lotion Pump

Pre-Compression Valve

Break-Away Spring

Nozzle Assembly

Child Resistant Closure

Adjustable Hose End Nozzle

Piston Rod

Container Closure

Vent System

119 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 10159997 - Low cost trigger sprayer (2018-12-25),

2. 9579675 - Pre-compression valve systems for trigger sprayers (2017-02-28),

3. 8864052 - Low cost trigger sprayer (2014-10-21),

4. 8469291 - Low cost trigger sprayer (2013-06-25),

5. D653541 - Trigger sprayer cover (2012-02-07),

6. 8104646 - Trigger sprayer having a reduced number of parts and a double tubular valve member (2012-01-31),

7. 7967171 - Air foaming pump trigger sprayer (2011-06-28),

8. 7942291 - Break-away spring and piston rod for a trigger sprayer (2011-05-17),

9. 7780098 - Fan spray pattern indexing nozzle for a trigger sprayer (2010-08-24),

10. 7775406 - Trigger sprayer with venting membrane in protective housing cavity (2010-08-17),

11. 7735688 - Rotating collar and locking and venting closure connector for an air foaming pump dispenser (2010-06-15),

12. 7712636 - Trigger sprayer piston rod with integral spring and pivoting piston connection (2010-05-11),

13. 7677416 - In-line manually operated liquid dispenser with simplified construction (2010-03-16),

14. 7637396 - Trigger sprayer piston rod with integral spring and ball and socket piston connection (2009-12-29),

15. 7571836 - Trigger sprayer with piston rod and spring snap connection (2009-08-11),

Title: Donald D Foster - Innovative Inventor from St. Charles

Introduction: Donald D Foster is a renowned inventor hailing from St. Charles, Missouri, known for his groundbreaking contributions to various fields through his innovative creations.

Latest Patents: Donald D Foster holds several patents in diverse areas, showcasing his versatility and creativity in inventing new solutions to existing problems.

Career Highlights: Throughout his illustrious career, Donald D Foster has consistently pushed the boundaries of innovation, with his inventions making a significant impact in industries such as technology, healthcare, and sustainability.

Collaborations: Donald D Foster has collaborated with leading companies, research institutions, and universities to further develop and commercialize his inventions, demonstrating his ability to work effectively in multidisciplinary teams.

Conclusion: Donald D Foster's passion for innovation and his dedication to creating solutions that improve lives make him a standout figure in the world of inventors, inspiring future generations to pursue their creative ideas.

Profile summary based on public USPTO records.