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For the Inventor, By the Inventor

San Diego, CA, United States of America

Histogen, Inc.


USPTO Granted Patents = 12

% Expired Patents = 33.3



Forward Citations = 48

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13 inventors (with patents filed for the assignee):

goldMedal Gail K Naughton (10 out of 48 patents)

silverMedal Mark Baumgartner (6 out of 9 patents)

bronzeMedal Kyle Nickey (6 out of 7 patents)

4.  Emmett Pinney (4 out of 6 patents)

5.  Frank Ziegler (4 out of 5 patents)

6.  Francis C Zeigler (2 out of 4 patents)

7.  Alfred P Spada (2 out of 52 patents)

8.  Robert J Ternansky (1 out of 35 patents)

9.  Michael Mueller (1 out of 2 patents)

10.  Robert J Temansky (1 out of 2 patents)

11.  Frank Ziegler (0 patent)

12.  Frank Zeigler (0 patent)

13.  Mark Baumgartner (0 patent)

14.  Frank Zeigler (0 patent)


12 patents:

1. 11597703 - Caspase inhibitors and methods of use thereof (2023-03-07),
2. 11447497 - (S)-3-(2-(4-(benzyl)-3-oxopiperazin-1-yl)acetamido)-4-oxo-5-(2,3,5,6-tetrafluorophenoxy)pentanoic acid derivatives and related compounds as caspase inhibitors for treating cardiovascular diseases (2022-09-20),
3. 11274276 - Conditioned medium and extracellular matrix compositions from cells cultured under hypoxic conditions (2022-03-15),
4. 10538736 - Conditioned medium and extracellular matrix compositions from cells cultured under hypoxic conditions (2020-01-21),
5. 10143708 - Extracellular matrix compositions for the treatment of cancer (2018-12-04),
6. 9512403 - Conditioned medium and extracellular matrix compositions from cells cultured under hypoxic conditions for methods of treating tissue injury (2016-12-06),
7. 9506038 - Extracellular matrix compositions for the treatment of cancer (2016-11-29),
8. 9034312 - Extracellular matrix compositions for the treatment of cancer (2015-05-19),
9. 8852637 - Extracellular matrix compositions for the treatment of cancer (2014-10-07),
10. 8535913 - Soluble composition for promoting hair growth produced by hypoxic culture of fibroblasts cells (2013-09-17),
11. 8530415 - Repair and/or regeneration of cells with a composition produced by culturing fibroblast cells under hypoxic conditions (2013-09-10),
12. 8524494 - Low oxygen tension and BFGF generates a multipotent stem cell from a fibroblast in vitro (2013-09-03),
Company Overview
Histogen, Inc. is a biotechnology company based in San Diego, California, specializing in regenerative medicine and tissue engineering. The organization focuses on developing innovative therapies that harness the body's natural healing processes, particularly in the fields of dermatology and orthopedics. Histogen's proprietary technologies are designed to stimulate the production of key proteins and growth factors, aiming to address various medical conditions and enhance tissue repair and regeneration.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

12 Patents

#448 in San Diego, CA

#6,066 in California

#25,578 in US

#48,209 in the World

San Diego, CA (US)
San Diego, CA, United States of America

Histogen, Inc.

Forward Citations = 48

13 inventors:

goldMedal Gail K Naughton (10 out of 48 patents)

silverMedal Mark Baumgartner (6 out of 9 patents)

bronzeMedal Kyle Nickey (6 out of 7 patents)

4.  Emmett Pinney (4 out of 6 patents)

5.  Frank Ziegler (4 out of 5 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Histogen, Inc.. Retrieved from https://idiyas.com/company/histogen

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

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]
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