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For the Inventor, By the Inventor

Tullytown, PA, United States of America

A-Lok Products, Inc.


USPTO Granted Patents = 23


Trademarks = 2

Forward Citations = 511

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6 inventors (with patents filed for the assignee):

goldMedal Jack Ditcher (15 out of 18 patents)

silverMedal James A Westhoff (11 out of 31 patents)

bronzeMedal James A Kelly (6 out of 28 patents)

4.  Christopher Handago (3 out of 3 patents)

5.  Eric A Ditcher (3 out of 4 patents)

6.  John Ditcher (2 out of 7 patents)

7.  William C Andrick (10 patents)


23 patents:

1. 8794639 - Sealing assembly having liquid-filled seal (2014-08-05),
2. 7918464 - Gasket package (2011-04-05),
3. 7624992 - Gasket package (2009-12-01),
4. 5114162 - Gasket for use in manhole bases and the like (1992-05-19),
5. 5054794 - Clamping band for gaskets and the like and expansion means therefor (1991-10-08),
6. 4941643 - Apparatus for forming inverts and manhole assemblies and the like (1990-07-17),
7. 4903970 - Apparatus for providing a watertight seal for manhole pipe connections (1990-02-27),
8. 4890863 - Metallic adjustable clamping band for gaskets (1990-01-02),
9. 4801417 - Methods for forming inverts in manhold assemblies (1989-01-31),
10. 4746127 - Adjustable clamping band for gaskets and method for using same (1988-05-24),
11. 4737220 - Method of making a manhole riser having integral flexible waterlock for (1988-04-12),
12. 4719724 - Precast concrete manhole adjustable bolt slot assembly for securing cast (1988-01-19),
13. 4711455 - Gasket for use in manholes and including clamping band having (1987-12-08),
14. 4685650 - Apparatus for forming inverts and manhole assemblies (1987-08-11),
15. 4621941 - Manhole riser having integral flexible waterlock for manhole covers and (1986-11-11),
Company Overview
A-Lok Products, Inc. is a specialized manufacturer based in Tullytown, Pennsylvania, focusing on innovative solutions for the plumbing and HVAC industries. The company is known for its development of high-quality, reliable pipe fittings and connectors that enhance system performance and efficiency. A-Lok Products emphasizes engineering excellence and customer satisfaction, serving a diverse clientele across various sectors. Their commitment to quality and innovation positions them as a key player in the manufacturing landscape.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

23 Patents

#1 in Tullytown, PA

#526 in Pennsylvania

#14,428 in US

#27,685 in the World

Tullytown, PA (US)
Tullytown, PA, United States of America

A-Lok Products, Inc.

Forward Citations = 511

6 inventors:

goldMedal Jack Ditcher (15 out of 18 patents)

silverMedal James A Westhoff (11 out of 31 patents)

bronzeMedal James A Kelly (6 out of 28 patents)

4.  Christopher Handago (3 out of 3 patents)

5.  Eric A Ditcher (3 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: A-Lok Products, Inc.. Retrieved from https://idiyas.com/company/a-lok-products

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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