Mary Beth Letscher

Person

Jacksonville, FL, US

People

Patents Grantslast 30 patents

Information Patent Grant
Use of polymers in the recycled fiber washing/deinking process
- Patent number 5,626,718
- Issue date May 6, 1997
- Betz Laboratories, Inc.
- Irenee J. Philippe
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Use of anionic surfactant/dispersant blends for the deinking of gro...
- Patent number 5,387,355
- Issue date Feb 7, 1995
- Betz Laboratories, Inc.
- Mary Beth Letscher
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process and composition for deinking dry toner electrostatic printe...
- Patent number 5,302,242
- Issue date Apr 12, 1994
- Betz PaperChem Inc.
- Sandra K. Richmann
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process and composition for deinking dry toner electrostatic printe...
- Patent number 5,282,997
- Issue date Feb 1, 1994
- Betz PaperChem, Inc.
- Sandra K. Richmann
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Use of anionic surfactant/dispersant blends for the deinking of gro...
- Patent number 5,281,348
- Issue date Jan 25, 1994
- Betz PaperChem, Inc.
- Mary Beth Letscher
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Use of surfactants having an HLB less than 10 in the deinking of dr...
- Patent number 5,248,388
- Issue date Sep 28, 1993
- Betz PaperChem, Inc.
- Sandra K. Richmann
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Use of surfactants having an HLB less than 10 in the deinking of dr...
- Patent number 5,200,034
- Issue date Apr 6, 1993
- Betz PaperChem, Inc.
- Sandra K. Richmann
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Process and composition for deinking dry toner electrostatic printe...
- Patent number 5,141,598
- Issue date Aug 25, 1992
- Betz PaperChem, Inc.
- Sandra K. Richman
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Use of anionic surfactant/dispersant blends for the deinking of gro...
- Patent number 5,094,716
- Issue date Mar 10, 1992
- Betz PaperChem, Inc.
- Mary B. Letscher
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE

Mary Beth Letscher

Person

Patents Grantslast 30 patents

Use of polymers in the recycled fiber washing/deinking process

Use of anionic surfactant/dispersant blends for the deinking of gro...

Process and composition for deinking dry toner electrostatic printe...

Process and composition for deinking dry toner electrostatic printe...

Use of anionic surfactant/dispersant blends for the deinking of gro...

Use of surfactants having an HLB less than 10 in the deinking of dr...

Use of surfactants having an HLB less than 10 in the deinking of dr...

Process and composition for deinking dry toner electrostatic printe...

Use of anionic surfactant/dispersant blends for the deinking of gro...