Larry D. Markham

Follow

Person

Middletown, OH, US

People

Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for thickening pulp and paper stock
- Patent number 4,722,793
- Issue date Feb 2, 1988
- The Black Clawson Company
- Peter Seifert
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Disk rotor for selectifier screen
- Patent number 4,663,030
- Issue date May 5, 1987
- The Black Clawson Company
- David E. Chupka
- B07 - SEPARATING SOLIDS FROM SOLIDS SORTING
Information Patent Grant
Method and apparatus for controlled addition of alkaline chemicals...
- Patent number 4,431,480
- Issue date Feb 14, 1984
- The Black Clawson Company
- Larry D. Markham
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Froth flotation apparatus and method
- Patent number 4,399,028
- Issue date Aug 16, 1983
- The Black Clawson Company
- Gregory D. Kile
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Method and apparatus for oxygen delignification
- Patent number 4,384,920
- Issue date May 24, 1983
- The Black Clawson Company
- Larry D. Markham
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE