Deep Shaft Technology, Inc.

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USPTO Granted Patents = 5

Forward Citations = 61

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2 inventors (with patents filed for the assignee):

David C Pollock (4 out of 10 patents)

Dennis Z Mraz (1 out of 25 patents)

5 patents: Sort by Forward Citations

1. 5660724 - Multi-pressure head tank for use with vertical shaft bioreactors (1997-08-26),

2. 5651892 - Biodegradeable effluent nutrient removal (1997-07-29),

3. 5650070 - Aerobic long vertical shaft bioreactors (1997-07-22),

4. 5645726 - Treatment of waste liquor in a vertical shaft bioreactor (1997-07-08),

5. 5513903 - Method and apparatus for developing shafts using small diameter shafts (1996-05-07),

Company Overview

Deep Shaft Technology, Inc. is a leading provider of innovative solutions for deep shaft construction and maintenance projects. With a team of experienced engineers and state-of-the-art technology, we specialize in designing and implementing cutting-edge solutions for challenging underground environments. Our services include shaft sinking, lining, and rehabilitation, as well as shaft monitoring and maintenance to ensure the safety and efficiency of projects. Contact us today to learn more about how Deep Shaft Technology can help with your next deep shaft project.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

5 Patents

#330 in

#2,853 in Canada

CA