% Expired Patents = 40.0

EPO Patents = 3

Forward Citations = 21

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4 inventors (with patents filed for the assignee):

Bruno Tack (2 out of 5 patents)

Theo Van De Kerckhove (1 out of 1 patent)

Corneel R Van Der Veken (1 out of 1 patent)

4. Emile Van Hove (1 out of 1 patent)

5 patents: Sort by Forward Citations

1. 7895775 - Draghead for a trailing suction hopper and process for dredging by means of this draghead (2011-03-01),

2. 7647712 - Cutter head for dredging soil and method for dredging by means of this cutter head (2010-01-19),

3. 5732487 - Dredge head for dredging sludge by a trailing or pushing motion (1998-03-31),

4. 4549497 - Device for underwater sealing ports or similar, notably the bottom traps (1985-10-29),

5. 4362420 - Device for mounting and removing a cutter at the end of the cutter shaft (1982-12-07),

Company Overview

Dredging International is a leading provider of dredging, land reclamation, and marine engineering services worldwide. With over 150 years of experience, the company has established a strong reputation for delivering high-quality, innovative solutions to clients in various industries. Dredging International is part of the DEME Group, a global leader in dredging and marine engineering.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

5 Patents

#4 in Zwijndrecht

#449 in Belgium

Zwijndrecht, Belgium

Dredging International

Forward Citations = 21

4 inventors:

Bruno Tack (2 out of 5 patents)

Theo Van De Kerckhove (1 out of 1 patent)

Corneel R Van Der Veken (1 out of 1 patent)

4. Emile Van Hove (1 out of 1 patent)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Dredging International. Retrieved from https://idiyas.com/company/dredging-international

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]

3 patents (EPO):

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]