FAMILY OWNED AND OPERATED SINCE 1951

PATENTS

Our pioneering spirit is best demonstrated by our research and development team’s long-term commitment to continuous innovation. This mindset dates back to our founder’s invention of the first Integrated Vibratory Motor and Sandwich Screen™ Technology. Our quest to perpetually reinvent ourselves is exemplified by our ever-growing portfolio of U.S. and foreign patents.

 

The most up to date patent information for Derrick® equipment.

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Patents Revised (Sept 22)

Dual Pool 616/618

View Patent Information - Dual Pool 616-618

 

Additional Patents Pending

Dual Pool 626/628

View Patent Information - Dual Pool 626-628

 

Additional Patents Pending

Hyperpool

View Patent Information - Hyperpool

Additional Patents Pending

Pyramid Screens & Pyramid Plus Screens

Pyramid Screens & Pyramid Plus Screens

View Patent Information - Pyramid Screens & Pyramid Plus Screens

Dual Pool 616/618/626/628

The following Dual Pool 616/618/626/628 screen part numbers are patented under the below patent numbers: PMD600 DX-A200, PMD600 DX-A170, PMD600 DX-A140, PMD600 DX-A120, PMD600 DX-A100, PMD600 DX-A80, PMD600 DX-A70, PMD600 DX-A60, PMD600 DX-A50, PMD600 DX-A45, PMD600 DX-A40, PMD600 DX-A35, PMD600 DF-A325, PMD600 DF-A270, PMD600 DF-A230, PMD600 DF-A20, PMD+600 DX-A200, PMD+600 DX-A170, PMD+600 DX-A140, PMD+600 DX-A120, PMD+600 DX-A100, PMD+600 DX-A80, PMD+600 DX-A70, PMD+600 DX-A60, PMD+600 DX-A50, PMD+600 DX-A45, PMD+600 DX-A40, PMD+600 DX-A35, PMD+600 DF-A325, PMD+600 DF-A270, PMD+600 DF-A230, PMD+600 DF-A20


The above screen part numbers are used with the Dual Pool 616/618/626/628 machines. See Dual Pool 616/618 and Dual Pool 626/628 Patents.

Hyperpool

The following Hyperpool screen part numbers are patented under the below patent numbers: PMDHYP DX-A200, PMDHYP DX-A170, PMDHYP DX-A140, PMDHYP DX-A120, PMDHYP DX-A100, PMDHYP DX-A80, PMDHYP DX-A70, PMDHYP DX-A60, PMDHYP DX-A50, PMDHYP DX-A45, PMDHYP DX-A40, PMDHYP DX-A35, PMDHYP DF-A325, PMDHYP DF-A270, PMDHYP DF-A230, PMDHYP DF-A200, PMDHYP DF-A20, PMD+HYP DX-A200, PMD+HYP DX-A170, PMD+HYP DX-A140, PMD+HYP DX-A120, PMD+HYP DX-A100, PMD+HYP DX-A80, PMD+HYP DX-A70, PMD+HYP DX-A60, PMD+HYP DX-A50, PMD+HYP DX-A45, PMD+HYP DX-A40, PMD+HYP DX-A35, PMD+HYP DF-A325, PMD+HYP DF-A270, PMD+HYP DF-A230, PMD+HYP DF-A200, PMD+HYP DF-A20


The above screen part numbers are used with the Hyperpool machines. See Hyperpool Patents.

Additional Patents Pending

Polyweb Urethane Screens

The following Urethane Screen part numbers are patented:

View Patent Information - Polyweb

Polyweb WS Urethane Screens

WS56-30x53, WS56-30x63, WS56-30x75, WS56-30x90, WS56-30x100, WS56-30x125, WS56-30x150, WS56-30x180, WS56-30x210, WS56-30x230, WS56-30x250, WS56-30x300, WS56-30x350, WS56-30x390, WS56-30x430, WS56-30x500, WS56-30x600, WS56-30x1400

Polyweb DFTB Urethane Screens

DFTB42-40x104, DFTB42-40x135, DFTB42-40x180, DFTB42-40x500, DFTB42-40x1.2SQ, DFTB42-40x2.0SQ, DFTB42-40x3.5SQ, DFTB42-40x8.0SQ

Polyweb MP Urethane Screens

MP48-30x269, MP48-30x285, MP48-30x360, MP48-30x414, MP48-30x437, MP48-30x465, MP48-30x475, MP48-30x503, MP48-30x650, MP48-30x1041, MP48-30x2235

Additional Patents Pending

Trilogy Screens

The following Trilogy Screen part numbers are patented under the below patent numbers:

SPMD600-A104BB, SPMD700-A25BA, SPMD700-A35BA, SPMD700-A81BB, SPMD700-A87BB, SPMD700-A90BB, SPMDDHP-A104BB, SPMDDHP-A25AA, SPMDDHP-A25BA, SPMDDHP-A25BB, SPMDDHP-A35AA, SPMDDHP-A35BA, SPMDDHP-A45BA, SPMDDHP-A90BB, SPMDHYP-A104BB, SPMDHYP-A120A, SPMDHYP-A200A, SPMDHYP-A200AA, SPMDHYP-A200B, SPMDHYP-A200BA, SPMDHYP-A25A, SPMDHYP-A25AA, SPMDHYP-A30AA, SPMDHYP-A30BA, SPMDHYP-A32AA, SPMDHYP-A35A, SPMDHYP-A35AA, SPMDHYP-A35BA, SPMDHYP-A40BA, SPMDHYP-A45BA, SPMDHYP-A50AA, SPMDHYP-A50B, SPMDHYP-A50BA, SPMDHYP-A74BB

View Patent Information - Trilogy Screens

 

SuperStack

View Patent Information - SuperStack

Additional Patents Pending

G-Vault Urethane Interstage Screen

View Patent Information - G-Vault

Additional Patents Pending

Centrifuge

View Patent Information - Centrifuge

Additional Patents Pending

Sending