DD

David H. Dumas

HE Hercules: 16 patents #8 of 715Top 2%
Overall (All Time): #302,752 of 4,157,543Top 8%
16
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6316095 2-oxetanone sizing agents and their use in paper Donald K. Black, Kyle J. Bottorff, Clement L. Brungardt, Susan M. Ehrhardt, John C. Gast +1 more 2001-11-13
6007906 Process of using fine paper containing 2-oxetanone sizing agent in high speed precision converting or reprographic operations Kyle J. Bottorff, Clement L. Brungardt, Susan M. Ehrhardt, John C. Gast, Jian Zhang 1999-12-28
5972100 Pretreatment of filler with cationic ketene dimer 1999-10-26
5685815 Process of using paper containing alkaline sizing agents with improved conversion capability Kyle J. Bottorff, Clement L. Brungardt, Susan M. Ehrhardt, John C. Gast, Jian Zhang 1997-11-11
5176794 Flame spread barrier made from mechanically delaminated vermiculite sheet Herbert T. Conner, Lawrence L. Nelson 1993-01-05
5139615 Composite sheet made from mechanically delaminated vermiculite Herbert T. Conner 1992-08-18
4904520 Gas-permeable, liquid-impermeable nonwoven material Elliott Echt 1990-02-27
4522686 Aqueous sizing compositions 1985-06-11
4478682 Sizing method and sizing composition for use therein Ralph A. Bankert 1984-10-23
4407994 Aqueous sizing composition comprising ketene dimer and epihalohydrin/polyamino polyamide/bis(hexamethylene)triamine reaction product Ralph A. Bankert 1983-10-04
4380602 Water-soluble thermosettable resinous compositions containing dicyandiamide-formaldehyde condensates modified with epihalohydrin and process for preparing the same 1983-04-19
4317756 Sizing composition comprising a hydrophobic cellulose-reactive sizing agent and a cationic polymer 1982-03-02
4295931 Sizing method and sizing composition for use therein 1981-10-20
4279794 Sizing method and sizing composition for use therein 1981-07-21
4243481 Sizing compositions 1981-01-06
4240935 Ketene dimer paper sizing compositions 1980-12-23