David James Witter

This inventor holds 50 USPTO granted patents and 4 published patent applications and 22 EPO patents, primarily in Cancer Therapeutics. Top assignees: Merck Sharp + Dohme Corp., Osi Pharmaceuticals, Inc., Merck + Co., Inc.. Active years: 2003-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: David James Witter. Retrieved from https://idiyas.com/inventor/david-james-witter

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

Calculating rank

USPTO Granted Patents = 50 (Patent Applications = 4)

% Patents Active = 84.0

EPO Patents = 22 (Patent Applications = 17)

Average Co-Inventor Count = 5.0

ph-index = 10

Forward Citations = 281(Granted Patents)

Location History:

Putman Valley, NY (US) (2003 - 2009)
Putnam Valley, NY (US) (2003 - 2012)
Norfolk, MA (US) (2009 - 2024)

Company Filing History:

31 out of 2,405

Merck Sharp + Dohme Corp.

patents

13 out of 118

Osi Pharmaceuticals, Inc.

Merck Hdac Research, LLC

patents

5. 1 out of 72

Merck Sharp & Dohme LLC

patents

6. 1 out of 9

Msd International Gmbh

patents

7. 1 out of 10

Msd R&d (China) Co., Ltd.

where one patent can have more than one assignee

Years Active: 2003-2026

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Areas of Expertise:

ERK Inhibitors

Histone Deacetylase Inhibitors

PRMT5 Inhibitors

Tricyclic Compounds

Purine Inhibitors

Janus Kinase Inhibitors

Adenosine A Receptors

Modified Malonate Derivatives

Thiophene Derivatives

Benzothiophene Hydroxamic Acid

4-Carboxybenzylamino Derivatives

Pyrrolopyrimidines

50 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12552826 - PRMT5 inhibitors (2026-02-17),

2. 12173026 - PRMT5 inhibitors (2024-12-24),

3. 11993602 - PRMT5 inhibitors (2024-05-28),

4. 11230547 - Purine inhibitors of human phosphatidylinositol 3-kinase delta (2022-01-25),

5. 11179389 - Purine inhibitors of human phosphatidylinositol 3-kinase delta (2021-11-23),

6. 11098059 - PRMT5 inhibitors (2021-08-24),

7. 10947234 - PRMT5 inhibitors (2021-03-16),

8. 10759805 - Compounds that are ERK inhibitors (2020-09-01),

9. 10442819 - Tricyclic compounds as inhibitors of mutant IDH enzymes (2019-10-15),

10. 10399972 - Tricyclic compounds as inhibitors of mutant IDH enzymes (2019-09-03),

11. 10065967 - Compounds that are ERK inhibitors (2018-09-04),

12. 9988397 - ERK inhibitors (2018-06-05),

13. 9884048 - ERK inhibitors (2018-02-06),

14. 9745307 - Compounds that are ERK inhibitors (2017-08-29),

15. 9546168 - ERK inhibitors (2017-01-17),

Title: The Inventor David James Witter

Introduction: David James Witter is a prolific inventor based in Norfolk, Massachusetts, known for his groundbreaking contributions to various fields.

Latest Patents: David James Witter 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 James Witter has consistently demonstrated his ability to transform creative concepts into tangible inventions that have made a significant impact on society.

Collaborations: Throughout his career, David James Witter has collaborated with leading companies, research institutions, and universities to further develop and commercialize his inventions, solidifying his reputation as a visionary inventor.

Conclusion: David James Witter's passion for innovation and his relentless pursuit of excellence continue to drive him to push the boundaries of what is possible, making him a respected figure in the world of inventors.

Profile summary based on public USPTO records.