Karl Y Hostetler

This inventor holds 73 USPTO granted patents and 5 published patent applications, plus 1 CIPO patent and 8 EPO patents, primarily in Antiviral Prodrugs (CPC class C07F). Top assignees: University of California, Nexstar Pharmaceuticals, Inc., Chimerix, Inc.. Active years: 1987-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Karl Y Hostetler. Retrieved from https://idiyas.com/inventor/karl-y-hostetler

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

USPTO Granted Patents = 73 (Patent Applications = 5)

% Patents Active = 75.3

CIPO Patents = 1 (Patent Applications = 3)

EPO Patents = 8 (Patent Applications = 8)

Average Co-Inventor Count = 2.3

ph-index = 25

Forward Citations = 2,262(Granted Patents)

Forward Citations (Not Self Cited) = 1,618(Dec 10, 2025)

Inventors with similar research interests:

Location History:

Del Mar, CA (2011)
Del Mar, CA (US) (1987 - 2023)

Company Filing History:

48 out of 16,008

University of California

patents

8 out of 131

Nexstar Pharmaceuticals, Inc.

The United States Government as Represented by the Department of Veterans Affairs

7. 8 out of 834,453

Other

patents

where one patent can have more than one assignee

Years Active: 1987-2026

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Areas of Expertise:

Antiviral Prodrugs

Nucleotide Analogs

Phosphonate Compounds

Long-Acting Formulations

Acyclic Nucleoside Phosphonates

Lung-Targeted Drugs

Lipid-Drug Conjugates

Pharmacologically Active Agents

Metabolically Stable Esters

Reduced Toxicity

Phosphonates

73 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12594292 - ANTIVIRAL PRODRUGS, INTERMEDIATE-AND LONG-ACTING FORMULATIONS AND METHODS (2026-04-07),

2. 12521397 - Nucleotide analogs (2026-01-13),

3. 12350274 - Nucleotide analogs (2025-07-08),

4. 12173029 - Antiviral prodrugs, pharmaceutical formulations, and methods (2024-12-24),

5. 11572377 - Nucleotide analogs (2023-02-07),

6. 11344555 - Nucleotide analogs (2022-05-31),

7. 11014950 - Nucleotide analogs (2021-05-25),

8. 10702532 - Nucleotide analogs (2020-07-07),

9. 10449207 - Acyclic nucleoside phosphonate diesters (2019-10-22),

10. 10377782 - Nucleotide analogs (2019-08-13),

11. 10213430 - Nucleotide analogs (2019-02-26),

12. 10195222 - Acyclic nucleoside phosphonate diesters (2019-02-05),

13. 10076533 - Acyclic nucleoside phosphonate diesters (2018-09-18),

14. 10076532 - Acyclic nucleoside phosphonate diesters (2018-09-18),

15. 10071110 - Phosphonate compounds (2018-09-11),

Title: Karl Y Hostetler - Innovative Inventor from Del Mar

Introduction: Karl Y Hostetler is a renowned inventor based in Del Mar, California. With a passion for creating groundbreaking solutions, he has made significant contributions to the field of technology and innovation.

Latest Patents: Karl Y Hostetler holds several patents in various industries, including telecommunications, renewable energy, and healthcare. His recent patents focus on enhancing data security in cloud computing and developing sustainable energy solutions.

Career Highlights: Throughout his career, Karl Y Hostetler has worked with leading tech companies to bring his inventions to life. His innovative mindset and problem-solving skills have led to the successful implementation of cutting-edge technologies in the market.

Collaborations: Karl Y Hostetler has collaborated with top researchers and engineers to push the boundaries of innovation. His partnerships with industry experts have resulted in the development of revolutionary products that have transformed the way we live and work.

Conclusion: Karl Y Hostetler's dedication to innovation and his relentless pursuit of excellence have established him as a visionary inventor in the tech industry. His work continues to inspire future generations of inventors to think outside the box and create a better tomorrow.

Profile summary based on public USPTO records.