For the Inventor, By the Inventor

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Nicholasville, KY, United States of America

Sargent & Greenleaf, Inc.

USPTO Granted Patents = 62

CIPO Patents = 3

EPO Patents = 1

Trademarks = 9

Forward Citations = 948

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53 inventors (with patents filed for the assignee):

Walter R Evans (11 out of 11 patents)

Michael Robert Clark (10 out of 10 patents)

James C Miller (6 out of 6 patents)

4. Harry C Miller (6 out of 12 patents)

5. Gregory C Lainhart (5 out of 5 patents)

6. Charles G Bechtiger (5 out of 5 patents)

7. Joseph M Remenicky (4 out of 4 patents)

8. Paul R Proefrock (4 out of 4 patents)

9. Gary R Murphree (4 out of 4 patents)

10. George Marshall Horne (3 out of 5 patents)

11. James P Peppard (3 out of 3 patents)

12. Klaus W Gartner (2 out of 61 patents)

13. Roy T Abner (2 out of 3 patents)

14. Ned R Urschel (2 out of 2 patents)

15. Steven Lee Worm (2 out of 46 patents)

Core Competencies:

Electronic Locks

Combination Locks

High Security Locks

Tamper-Evident Technology

Motorized Lock Mechanisms

Time Locks

Shock Resistant Locks

Keypad Bezel Lighting

Manipulation Resistant Features

Cash Tracking Systems

Panic Exit Systems

Safe Deposit Locks

62 patents: Sort by Forward Citations

1. 10669744 - Mechanical override of an electronic lock (2020-06-02),

2. 10415270 - High security electrochemical lock (2019-09-17),

3. 10134208 - System and method of initializing and controlling locks (2018-11-20),

4. 10032328 - Non-intrusive dial rotation detection of high security locks (2018-07-24),

5. 9964284 - Light for keypad bezel (2018-05-08),

6. 9845618 - Shock resistant lock (2017-12-19),

7. 8496167 - Cash tracking system (2013-07-30),

8. 6510587 - Door closure prevention apparatus and method (2003-01-28),

9. 6212923 - Lock including means for sensing position of bolt and for indicating whether or not bolt is extended from lock case (2001-04-10),

10. 6196037 - Lock system enabling user to lock door and extend lock bolt in a single action and push-pull lock with cushioning arrangement for protecting bolt drive components (2001-03-06),

11. 6094952 - Dead bolt combination lock with integrated re-locking features (2000-08-01),

12. 6016677 - Dead bolt combination lock and push-pull lock, each with integrated (2000-01-25),

13. 5816084 - Electronic combination lock with an arrangement for moving a locking (1998-10-06),

14. 5749252 - Manipulation resistant combination lock and method (1998-05-12),

15. 5647235 - Tamper-evident electronic combination lock having integral (1997-07-15),

Sargent & Greenleaf, Inc. is a leading global provider of security solutions for safes and vaults. With a long history dating back to 1857, the company has established itself as a trusted name in the industry. Sargent & Greenleaf offers a wide range of high-quality mechanical and electronic locks, key systems, and time locks, designed to protect valuable assets. Their solutions are used by banks, businesses, government agencies, and residential customers worldwide. With a commitment to innovation and customer satisfaction, Sargent & Greenleaf continues to set new standards in secure access technology.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

62 Patents

#1 in Nicholasville, KY

#23 in Kentucky

#5,627 in US

#11,354 in the World

Nicholasville, KY, United States of America

Sargent & Greenleaf, Inc.

Forward Citations = 948

53 inventors:

Walter R Evans (11 out of 11 patents)

Michael Robert Clark (10 out of 10 patents)

James C Miller (6 out of 6 patents)

4. Harry C Miller (6 out of 12 patents)

5. Gregory C Lainhart (5 out of 5 patents)

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