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Trademarks = 1

Forward Citations = 331

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6 inventors (with patents filed for the assignee):

Thomas E Stirling (7 out of 9 patents)

Roy H Werner (4 out of 5 patents)

Walter D Haentjens (2 out of 13 patents)

4. Clifford J Decker (2 out of 3 patents)

5. John R Ackerman (1 out of 5 patents)

6. William H Smith (1 out of 21 patents)

11 patents: Sort by Forward Citations

1. 5195867 - Slurry pump shaft seal flushing (1993-03-23),

2. 5092909 - Biodesulphurization process utilizing bacteria (1992-03-03),

3. 5085809 - Apparatus for gas absorption in a liquid (1992-02-04),

4. 5043104 - Apparatus for gas absorption in a liquid (1991-08-27),

5. 5004484 - Air stripping of liquids using high intensity turbulent mixer (1991-04-02),

6. 4917577 - High speed centrifugal oxygenator (1990-04-17),

7. 4913619 - Centrifugal pump having resistant components (1990-04-03),

8. 4877532 - Centrifugal oxygenator and method for treatment of waste water (1989-10-31),

9. 4761077 - Mixing apparatus (1988-08-02),

10. 4642919 - Submersible sludge removing apparatus (1987-02-17),

11. 4474477 - Mixing apparatus (1984-10-02),

Barrett, Haentjens & Co. is a leading consulting firm specializing in financial advisory services for businesses. With a team of experienced professionals, we provide strategic solutions for financial planning, investment management, and risk assessment. Our goal is to help our clients achieve their financial goals and secure their future.

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Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

11 Patents

#2 in Hazelton, PA

#978 in Pennsylvania

#26,752 in US

#50,255 in the World

Hazelton, PA, United States of America

Barrett, Haentjens & Co.