David Aaron Estell

This inventor holds 145 USPTO granted patents and 92 published patent applications, plus 7 CIPO patents and 74 EPO patents, primarily in Protease Variants (CPC class C11D3-386). Top assignees: Danisco US Inc., Genencor International, Inc., The Procter Gamble Company. Active years: 1985-2026.

USPTO Granted Patents = 145 (Patent Applications = 92)

% Patents Active = 68.3

CIPO Patents = 7 (Patent Applications = 22)

EPO Patents = 74 (Patent Applications = 101)

Average Co-Inventor Count = 2.4

ph-index = 18

Forward Citations = 1,100(Granted Patents)

Forward Citations (Not Self Cited) = 883(Dec 10, 2025)

Inventors with similar research interests:

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Location History:

Mountain View, CA (US) (1985 - 1999)
San Francisco, CA (US) (2010 - 2021)
Palo Alto, CA (US) (2020 - 2022)
San Mateo, CA (US) (1992 - 2024)

Company Filing History:

Genencor International, Inc.

patents

9 out of 17,173

The Procter Gamble Company

Genecor International, Inc.

The Goodyear & Tire Rubber Company

patents

8. 1 out of 529

University of Toronto

patents

where one patent can have more than one assignee

Years Active: 1985-2026

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Areas of Expertise:

Protease Variants

Subtilisin Variants

Microbial Proteases

Cold Water Proteases

Alpha-Amylase Variants

Lipolytic Enzyme Variants

Cellulase Variants

Thermolysin Variants

Detergent Compositions

Endoglucanase Activity

Storage-Stable Proteases

Compositions and Methods

145 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12559759 - FUSION POLYPEPTIDES (2026-02-24),

2. 12509672 - SUBTILISIN VARIANTS HAVING IMPROVED STABILITY (2025-12-30),

3. 12448616 - Compositions and methods comprising variant microbial proteases (2025-10-21),

4. 12415996 - Subtilisin variants (2025-09-16),

5. 12410420 - Compositions and methods comprising variant microbial proteases (2025-09-09),

6. 12338467 - Variant maltohexaose-forming α-amylase variants (2025-06-24),

7. 12338416 - Fabric and home care products with cold water protease (2025-06-24),

8. 12305205 - AprL-clade protease variants and uses thereof (2025-05-20),

9. 12203112 - Compositions and methods comprising protease variants (2025-01-21),

10. 12180522 - Polypeptides with endoglucanase activity and uses thereof (2024-12-31),

11. 12146122 - Protease variants and uses thereof (2024-11-19),

12. 12104187 - Protease variants and uses thereof (2024-10-01),

13. 12043853 - Use and production of storage-stable neutral metalloprotease (2024-07-23),

14. 11946080 - Protease variants and uses thereof (2024-04-02),

15. 11898177 - Variant maltohexaose-forming alpha-amylase variants (2024-02-13),

Title: The Inventive Mind of David Aaron Estell

Introduction: David Aaron Estell is a prolific inventor based in San Mateo, CA, known for his groundbreaking contributions to various fields.

Latest Patents: David Aaron Estell holds several patents in the areas of technology, healthcare, and consumer products, showcasing his diverse range of innovative ideas.

Career Highlights: With a career spanning over two decades, David Aaron Estell has established himself as a visionary inventor with a keen eye for identifying gaps in the market and creating solutions through his inventions.

Collaborations: Throughout his career, David Aaron Estell has collaborated with leading companies, research institutions, and universities to bring his inventions to life, demonstrating his ability to work effectively in multidisciplinary teams.

Conclusion: David Aaron Estell's passion for innovation and his relentless drive to push the boundaries of what is possible make him a standout figure in the world of inventors, with a legacy that continues to inspire future generations.