Tjako A. Wolters

Person

Zeist, NL

People

Patents Grantslast 30 patents

Information Patent Grant
Method and device for maintaining tools at a level
- Patent number 4,584,784
- Issue date Apr 29, 1986
- Tjako A. Wolters
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Dredged soil conveying vessel
- Patent number 4,505,214
- Issue date Mar 19, 1985
- Ballast-Nedam Groep N.V.
- Johannes C. Tjebbes
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Watertight seal between two concrete elements
- Patent number 4,449,720
- Issue date May 22, 1984
- Ballast-Nedam Groep N.V.
- Tjako A. Wolters
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Method of dredging and dredging implement
- Patent number 4,418,484
- Issue date Dec 6, 1983
- Ballast-Nedam Groep N.V.
- Tjako A. Wolters
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Method of accurately dredging a desired profile contour
- Patent number 4,374,420
- Issue date Feb 15, 1983
- Ballast-Nedam Groep N.V.
- Tjako A. Wolters
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Transport conduit
- Patent number 4,250,034
- Issue date Feb 10, 1981
- Ballast-Nedam Groep N.V.
- Tjako A. Wolters
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Device for cutting loose hard ground material
- Patent number 4,204,347
- Issue date May 27, 1980
- Ballast-Nedam Groep N.V.
- Tjako A. Wolters
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Method and device for separating a mixture
- Patent number 4,145,280
- Issue date Mar 20, 1979
- Ballast-Nedam Groep N.V.
- Cornelis G. Middelbeek
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Device for separating water from substances contained therein
- Patent number 4,138,342
- Issue date Feb 6, 1979
- Ballast-Nedam Groep N.V.
- Cornelis G. Middelbeek
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Flexible connections for suction dredger pipes
- Patent number 4,123,860
- Issue date Nov 7, 1978
- Ballast-Nedam Groep N.V.
- Jan De Koning
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Suction dredge with swell compensating ladder mount
- Patent number 4,084,334
- Issue date Apr 18, 1978
- Ballast Nedam Groep N.V.
- Tjako Aaldrik Wolters
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Flexible connecting arrangement for suction dredgers
- Patent number 4,083,135
- Issue date Apr 11, 1978
- Ballast-Nedam Groep, N.V.
- Theodorus van den Brink
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Swingable water and slush tube assembly for suction dredgers
- Patent number 4,083,133
- Issue date Apr 11, 1978
- Ballast Nedam Groep N.V.
- Cornelis Jan Ravesteyn
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Tjako A. Wolters

Person

Patents Grantslast 30 patents

Method and device for maintaining tools at a level

Dredged soil conveying vessel

Watertight seal between two concrete elements

Method of dredging and dredging implement

Method of accurately dredging a desired profile contour

Transport conduit

Device for cutting loose hard ground material

Method and device for separating a mixture

Device for separating water from substances contained therein

Flexible connections for suction dredger pipes

Suction dredge with swell compensating ladder mount

Flexible connecting arrangement for suction dredgers

Swingable water and slush tube assembly for suction dredgers