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Saturating grade paper
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Patent number 4,895,759
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Issue date Jan 23, 1990
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PPG Industries, Inc.
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Roger A. Crawford
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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-
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2698334
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Patent number 2,698,334
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Issue date Dec 28, 1954
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C07 - ORGANIC CHEMISTRY
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2187710
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Patent number 2,187,710
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Issue date Jan 16, 1940
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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2176850
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Patent number 2,176,850
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Issue date Oct 17, 1939
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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1991786
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Patent number 1,991,786
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Issue date Feb 19, 1935
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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1968223
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Patent number 1,968,223
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Issue date Jul 31, 1934
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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1949549
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Patent number 1,949,549
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Issue date Mar 6, 1934
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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1935728
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Patent number 1,935,728
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Issue date Nov 21, 1933
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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1935580
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Patent number 1,935,580
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Issue date Nov 14, 1933
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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1931933
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Patent number 1,931,933
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Issue date Oct 24, 1933
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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1931575
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Patent number 1,931,575
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Issue date Oct 24, 1933
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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1919329
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Patent number 1,919,329
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Issue date Jul 25, 1933
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D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
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1918250
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Patent number 1,918,250
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Issue date Jul 18, 1933
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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1913329
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Patent number 1,913,329
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Issue date Jun 6, 1933
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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1899223
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Patent number 1,899,223
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Issue date Feb 28, 1933
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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1891337
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Patent number 1,891,337
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Issue date Dec 20, 1932
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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1882175
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Patent number 1,882,175
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Issue date Oct 11, 1932
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D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
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1880047
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Patent number 1,880,047
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Issue date Sep 27, 1932
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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1864985
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Patent number 1,864,985
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Issue date Jun 28, 1932
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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1860432
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Patent number 1,860,432
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Issue date May 31, 1932
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D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
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1860053
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Patent number 1,860,053
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Issue date May 24, 1932
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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1858017
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Patent number 1,858,017
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Issue date May 10, 1932
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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1854331
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Patent number 1,854,331
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Issue date Apr 19, 1932
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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1851330
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Patent number 1,851,330
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Issue date Mar 29, 1932
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
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1848662
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Patent number 1,848,662
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Issue date Mar 8, 1932
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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1842649
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Patent number 1,842,649
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Issue date Jan 26, 1932
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D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
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1839774
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Patent number 1,839,774
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Issue date Jan 5, 1932
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D01 - NATURAL OR ARTIFICIAL THREADS OR FIBRES SPINNING
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1831647
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Patent number 1,831,647
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Issue date Nov 10, 1931
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C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...