Keith Wojciechowski

Person

Lakeview, NY, US

People

Patents Grantslast 30 patents

Information Patent Grant
Compression apparatuses, systems and methods for screening materials
- Patent number 11,958,077
- Issue date Apr 16, 2024
- Derrick Corporation
- Christian Newman
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Compression apparatuses, systems and methods for screening materials
- Patent number 11,938,516
- Issue date Mar 26, 2024
- Derrick Corporation
- Christian Newman
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Compression apparatuses, systems and methods for screening materials
- Patent number 11,890,647
- Issue date Feb 6, 2024
- Derrick Corporation
- Christian Newman
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Injection molded screening apparatuses and methods
- Patent number 11,638,933
- Issue date May 2, 2023
- Derrick Corporation
- Keith Wojciechowski
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method and apparatuses for pre-screening
- Patent number 11,628,474
- Issue date Apr 18, 2023
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Thermoplastic compositions, methods, apparatus, and uses
- Patent number 11,505,638
- Issue date Nov 22, 2022
- Derrick Corporation
- James R. Colgrove
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Injection molded screening apparatuses and methods
- Patent number 11,471,913
- Issue date Oct 18, 2022
- Derrick Corporation
- Keith Wojciechowski
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Injection molded screening apparatuses and methods
- Patent number 11,471,914
- Issue date Oct 18, 2022
- Derrick Corporation
- Keith Wojciechowski
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Injection molded screening apparatuses and methods
- Patent number 11,446,704
- Issue date Sep 20, 2022
- Derrick Corporation
- Keith Wojciechowski
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Injection molded screening apparatuses and methods
- Patent number 11,426,766
- Issue date Aug 30, 2022
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Injection molded screening apparatuses and methods
- Patent number 11,413,656
- Issue date Aug 16, 2022
- Derrick Corporation
- Keith F. Wojciechowski
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method and apparatus for screening
- Patent number 11,344,917
- Issue date May 31, 2022
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Method and apparatuses for screening
- Patent number 11,338,327
- Issue date May 24, 2022
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Thermoplastic compositions, methods, apparatus, and uses
- Patent number 11,203,678
- Issue date Dec 21, 2021
- Derrick Corporation
- James R. Colgrove
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Injection molded screening apparatuses and methods
- Patent number 11,198,155
- Issue date Dec 14, 2021
- Derrick Corporation
- Keith F. Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Injection molded screening apparatuses and methods
- Patent number 11,161,150
- Issue date Nov 2, 2021
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Injection molded screening apparatuses and methods
- Patent number 11,000,882
- Issue date May 11, 2021
- Derrick Corporation
- Keith Wojciechowski
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Injection molded screening apparatuses and methods
- Patent number 10,994,306
- Issue date May 4, 2021
- Derrick Corporation
- Keith Wojciechowski
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Injection molded screening apparatuses and methods
- Patent number 10,981,197
- Issue date Apr 20, 2021
- Derrick Corporation
- Keith Wojciechowski
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method and apparatuses for screening
- Patent number 10,974,282
- Issue date Apr 13, 2021
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Injection molded screening apparatuses and methods
- Patent number 10,974,281
- Issue date Apr 13, 2021
- Derrick Corporation
- Keith Wojciechowski
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Injection molded screening apparatuses and methods
- Patent number 10,967,401
- Issue date Apr 6, 2021
- Derrick Corporation
- Keith F. Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Injection molded screening apparatuses and methods
- Patent number 10,960,438
- Issue date Mar 30, 2021
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Injection molded screening apparatuses and methods
- Patent number 10,933,444
- Issue date Mar 2, 2021
- Derrick Corporation
- Keith F. Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Injection molded screening apparatuses and methods
- Patent number 10,843,230
- Issue date Nov 24, 2020
- Derrick Corporation
- Keith Wojciechowski
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Injection molded screening apparatuses and methods
- Patent number 10,835,926
- Issue date Nov 17, 2020
- Derrick Corporation
- Keith Wojciechowski
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Method and apparatus for screening
- Patent number 10,603,692
- Issue date Mar 31, 2020
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Injection molded screening apparatuses and methods
- Patent number 10,576,502
- Issue date Mar 3, 2020
- Derrick Corporation
- Keith Wojciechowski
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method and apparatuses for screening
- Patent number 10,363,577
- Issue date Jul 30, 2019
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Method and apparatuses for pre-screening
- Patent number 10,350,640
- Issue date Jul 16, 2019
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING

Patents Applicationslast 30 patents

Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20230256472
- Publication date Aug 17, 2023
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Application
THERMOPLASTIC COMPOSITIONS, METHODS, APPARATUS, AND USES
- Publication number 20220112359
- Publication date Apr 14, 2022
- Derrick Corporation
- James R. Colgrove
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20210354173
- Publication date Nov 18, 2021
- Derrick Corporation
- Keith Wojciechowski
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20210260624
- Publication date Aug 26, 2021
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20210237123
- Publication date Aug 5, 2021
- Derrick Corporation
- Keith Wojciechowski
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20210229131
- Publication date Jul 29, 2021
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20210121919
- Publication date Apr 29, 2021
- Derrick Corporation
- Keith F. Wojciechowski
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20210046508
- Publication date Feb 18, 2021
- Derrick Corporation
- Keith Wojciechowski
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
THERMOPLASTIC COMPOSITIONS, METHODS, APPARATUS, AND USES
- Publication number 20200317849
- Publication date Oct 8, 2020
- Derrick Corporation
- James R. Colgrove
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20200246833
- Publication date Aug 6, 2020
- Derrick Corporation
- Keith Wojciechowski
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
METHOD AND APPARATUS FOR SCREENING
- Publication number 20200179980
- Publication date Jun 11, 2020
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20200156115
- Publication date May 21, 2020
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20200156116
- Publication date May 21, 2020
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20200147648
- Publication date May 14, 2020
- Derrick Corporation
- Keith Wojciechowski
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20200147649
- Publication date May 14, 2020
- Derrick Corporation
- Keith Wojciechowski
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20200147650
- Publication date May 14, 2020
- Derrick Corporation
- Keith Wojciechowski
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
METHOD AND APPARATUSES FOR PRE-SCREENING
- Publication number 20190321856
- Publication date Oct 24, 2019
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Application
METHOD AND APPARATUSES FOR SCREENING
- Publication number 20190321859
- Publication date Oct 24, 2019
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20190314861
- Publication date Oct 17, 2019
- Derrick Corporation
- Keith F. Wojciechowski
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20190217338
- Publication date Jul 18, 2019
- Derrick Corporation
- Keith F. Wojciechowski
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20190168261
- Publication date Jun 6, 2019
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20190168262
- Publication date Jun 6, 2019
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20190001373
- Publication date Jan 3, 2019
- Derrick Corporation
- Keith F. Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Application
THERMOPLASTIC COMPOSITIONS, METHODS, APPARATUS, AND USES
- Publication number 20180312667
- Publication date Nov 1, 2018
- Derrick Corporation
- James R. Colgrove
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20180243797
- Publication date Aug 30, 2018
- Derrick Corporation
- Keith Wojciechowski
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
METHOD AND APPARATUSES FOR SCREENING
- Publication number 20180236492
- Publication date Aug 23, 2018
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Application
METHOD AND APPARATUS FOR SCREENING
- Publication number 20180193882
- Publication date Jul 12, 2018
- Derrick Corporation
- Keith Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20180185880
- Publication date Jul 5, 2018
- Derrick Corporation
- Keith F. Wojciechowski
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20170312785
- Publication date Nov 2, 2017
- Derrick Corporation
- Keith F. Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Application
INJECTION MOLDED SCREENING APPARATUSES AND METHODS
- Publication number 20160310994
- Publication date Oct 27, 2016
- Derrick Corporation
- Keith F. Wojciechowski
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING

Keith Wojciechowski

Person

Patents Grantslast 30 patents

Compression apparatuses, systems and methods for screening materials

Compression apparatuses, systems and methods for screening materials

Compression apparatuses, systems and methods for screening materials

Injection molded screening apparatuses and methods

Method and apparatuses for pre-screening

Thermoplastic compositions, methods, apparatus, and uses

Injection molded screening apparatuses and methods

Injection molded screening apparatuses and methods

Injection molded screening apparatuses and methods

Injection molded screening apparatuses and methods

Injection molded screening apparatuses and methods

Method and apparatus for screening

Method and apparatuses for screening

Thermoplastic compositions, methods, apparatus, and uses

Injection molded screening apparatuses and methods

Injection molded screening apparatuses and methods

Injection molded screening apparatuses and methods

Injection molded screening apparatuses and methods

Injection molded screening apparatuses and methods

Method and apparatuses for screening

Injection molded screening apparatuses and methods

Injection molded screening apparatuses and methods

Injection molded screening apparatuses and methods

Injection molded screening apparatuses and methods

Injection molded screening apparatuses and methods

Injection molded screening apparatuses and methods

Method and apparatus for screening

Injection molded screening apparatuses and methods

Method and apparatuses for screening

Method and apparatuses for pre-screening

Patents Applicationslast 30 patents

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

THERMOPLASTIC COMPOSITIONS, METHODS, APPARATUS, AND USES

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

THERMOPLASTIC COMPOSITIONS, METHODS, APPARATUS, AND USES

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

METHOD AND APPARATUS FOR SCREENING

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

METHOD AND APPARATUSES FOR PRE-SCREENING

METHOD AND APPARATUSES FOR SCREENING

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

THERMOPLASTIC COMPOSITIONS, METHODS, APPARATUS, AND USES

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

METHOD AND APPARATUSES FOR SCREENING

METHOD AND APPARATUS FOR SCREENING

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

INJECTION MOLDED SCREENING APPARATUSES AND METHODS