Assignee
ANDREWS PAPER & CHEM CO INC
13 granted patents·149 citations·filing 1975–1998
Top patents by PatentIndex Score
13 records- 0188US3996056ADiazotype reproduction layer formed from matrix of spheric particle polystyrene pigment and diazotype componentsANDREWS PAPER & CHEM CO INC·Filed 1975·Granted Dec 7, 1976·22 cites·10 claims
- 0287US4271227ATransparent fibrous sheets and process for makingANDREWS PAPER & CHEM CO INC·Filed 1979·Granted Jun 2, 1981·22 cites·20 claims
- 0382US4569888ATransparentized paper sheetANDREWS PAPER & CHEM CO INC·Filed 1984·Granted Feb 11, 1986·37 cites·13 claims
- 0471US4416950ATransparent fibrous sheetsANDREWS PAPER & CHEM CO INC·Filed 1982·Granted Nov 22, 1983·27 cites·17 claims
- 0563US4403028ALight sensitive diazonium salts and diazotype materialsANDREWS PAPER & CHEM CO INC·Filed 1982·Granted Sep 6, 1983·10 cites·16 claims
- 0652US4241690AApparatus for coating moving websANDREWS PAPER & CHEM CO INC·Filed 1979·Granted Dec 30, 1980·11 cites·3 claims
- 0749US4343884ADiazotype developing process and acidic developer with amine base saltANDREWS PAPER & CHEM CO INC·Filed 1980·Granted Aug 10, 1982·5 cites·13 claims
- 0848US5102730AErasable reproduction materialANDREWS PAPER & CHEM CO INC·Filed 1990·Granted Apr 7, 1992·8 cites·2 claims
- 0939US6080521AUniversal diazotype precoat for application to base papers with acidic or alkaline sizingANDREWS PAPER & CHEM CO INC·Filed 1998·Granted Jun 27, 2000·2 cites·8 claims
- 1035US4743524ADiazotype composition with a non-migrating yellow coupler of controlled coupling energyANDREWS PAPER & CHEM CO INC·Filed 1986·Granted May 10, 1988·2 cites·4 claims
- 1134US4478926AZinc sulfonates and their use in diazotypyANDREWS PAPER & CHEM CO INC·Filed 1983·Granted Oct 23, 1984·1 cites·24 claims
- 1234US4401744ADiazotype compositions with improved printing performanceANDREWS PAPER & CHEM CO INC·Filed 1981·Granted Aug 30, 1983·1 cites·30 claims
- 1328US4792515AErasable diazotype materialANDREWS PAPER & CHEM CO INC·Filed 1987·Granted Dec 20, 1988·1 cites·6 claims
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