% Expired Patents = 8.3

Forward Citations = 265

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8 inventors (with patents filed for the assignee):

Ralph A Martino (5 out of 10 patents)

Hartley Moyes (3 out of 14 patents)

Kurt L Balthazor (2 out of 5 patents)

4. Tony R Speer (2 out of 2 patents)

5. Jd Beitzinger (2 out of 2 patents)

6. Eugene R Vogler (1 out of 1 patent)

7. Richard D Smith (1 out of 1 patent)

8. Douglas L Woerner (1 out of 1 patent)

12 patents: Sort by Forward Citations

1. 6709612 - Reformed medium density fiber board products, such as door skins, and a process for reforming medium density fiber board (2004-03-23),

2. 6689301 - Method of manufacturing a molded door skin from a wood composite, door skin produced therefrom, and door manufactured therewith (2004-02-10),

3. 6622449 - Door panel and method of forming same (2003-09-23),

4. D478387 - Door (2003-08-13),

5. D466615 - Door (2002-12-04),

6. 6335082 - Reformed medium density fiber board products, such as door skins, and a process for reforming medium density fiber board (2002-01-01),

7. 6312540 - Method of manufacturing a molded door skin from a flat wood composite, door skin produced therefrom, and door manufactured therewith (2001-11-06),

8. 6309503 - Flat skinned door that simulates a three dimensional molded skin door and corresponding method (2001-10-30),

9. 6267889 - Rotary drum filter (2001-07-31),

10. 6253507 - Clip for a door frame system (2001-07-03),

11. 6079183 - Method of manufacturing a molded door skin from a wood composite, door (2000-06-27),

12. 5950382 - Flat skinned door that simulates a three-dimensional molded skin door (1999-09-14),

Company Overview

Mdf, Inc. is a Tampa, Florida-based company specializing in the development and manufacturing of advanced materials and components for various industries. With a focus on innovation, Mdf, Inc. engages in research and technology domains that include aerospace, automotive, and industrial applications. The company is dedicated to delivering high-quality solutions that meet the evolving needs of its clients, leveraging cutting-edge technologies to enhance performance and sustainability across its product offerings.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

12 Patents

#38 in Tampa, FL

#728 in Florida

#25,557 in US

#48,163 in the World

Tampa, FL, United States of America

Mdf, Inc.

Forward Citations = 265

8 inventors:

Ralph A Martino (5 out of 10 patents)

Hartley Moyes (3 out of 14 patents)

Kurt L Balthazor (2 out of 5 patents)

4. Tony R Speer (2 out of 2 patents)

5. Jd Beitzinger (2 out of 2 patents)

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

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]