For the Inventor, By the Inventor

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Easton, PA, United States of America

Primary Delivery Systems, Inc.

USPTO Granted Patents = 30

Forward Citations = 821

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5 inventors (with patents filed for the assignee):

Jack Weinstein (22 out of 24 patents)

Stuart W DeJonge (7 out of 30 patents)

John E Harrold (4 out of 4 patents)

4. Kenneth P Glynn (2 out of 96 patents)

5. Antonia R DeJonge (1 out of 1 patent)

Core Competencies:

Child-Resistant Cap

Metered Liquid Dispenser

Vertical Ratchet Dispenser

Blister Pack Opener

Squeeze Cap

Puncturer Device

Reversible Trigger

Tilt Dispensing Cap

Spray Device

Automatic Release Key

Counter Dispenser

Convertible Cap

30 patents: Sort by Forward Citations

1. 6202876 - Push and twist locking child-resistant and container (2001-03-20),

2. 5967377 - Metered liquid dispenser with lift fill mechanism (1999-10-19),

3. 5860572 - Side action vertical ratchet dispenser with reversible trigger (1999-01-19),

4. 5853101 - Blister pack opener (1998-12-29),

5. 5797517 - Liquid pump dispenser with tri-purpose nozzle (1998-08-25),

6. 5749496 - Squeeze and rotate to lift captive cap dispenser (1998-05-12),

7. 5636765 - Metered dispensing cap with manifold cover (1997-06-10),

8. 5570821 - Vertical ratchet dispenser device with anti-oozing pull-back mechanism (1996-11-05),

9. 5551607 - Dispensing cap with leveraged pivot trigger (1996-09-03),

10. 5509550 - Child resistant cap with automatic release key (1996-04-23),

11. 5503302 - Sealed container puncturer and spray dispensing device (1996-04-02),

12. 5433329 - Child-resistant cap with independent open and close ratchet sets (1995-07-18),

13. 5431283 - Blister pack opener-ejector (1995-07-11),

14. 5372285 - Vertical ratchet gel-like material dispenser with hinged trigger (1994-12-13),

15. 5356010 - Container with blister pack opener (1994-10-18),

Primary Delivery Systems, Inc. is a specialized company based in Easton, PA, focusing on the development and manufacturing of innovative delivery systems for various applications. The organization is dedicated to advancing technologies that enhance the efficiency and effectiveness of product delivery, particularly in the medical and pharmaceutical sectors. With a commitment to research and development, Primary Delivery Systems aims to provide cutting-edge solutions that meet the evolving needs of its clients and improve patient outcomes.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

30 Patents

#10 in Easton, PA

#406 in Pennsylvania

#11,257 in US

#21,853 in the World

Easton, PA, United States of America

Primary Delivery Systems, Inc.

Forward Citations = 821

5 inventors:

Jack Weinstein (22 out of 24 patents)

Stuart W DeJonge (7 out of 30 patents)

John E Harrold (4 out of 4 patents)

4. Kenneth P Glynn (2 out of 96 patents)

5. Antonia R DeJonge (1 out of 1 patent)

Please report any incorrect information to [email protected]

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