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公开(公告)号:US2506048A
公开(公告)日:1950-05-02
申请号:US70510546
申请日:1946-10-23
Applicant: PAPER CHEMISTRY INST
Inventor: DEN AKKER JOHANNES A VAN
IPC: G01N3/06
CPC classification number: G01N3/062 , G01N2203/0071
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公开(公告)号:US2206521A
公开(公告)日:1940-07-02
申请号:US12105237
申请日:1937-01-18
Applicant: PAPER CHEMISTRY INST
Inventor: DEN AKKER JOHANNES A VAN , PHILIP NOLAN
CPC classification number: G01J3/14 , G01J3/10 , G01J2003/1278
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公开(公告)号:US2498844A
公开(公告)日:1950-02-28
申请号:US76901647
申请日:1947-08-16
Applicant: PAPER CHEMISTRY INST
Inventor: SEARS GEORGE R , RAE ROBERT D , DEN AKKER JOHANNES A VAN
IPC: G01N3/30
CPC classification number: G01N3/30
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公开(公告)号:US2312010A
公开(公告)日:1943-02-23
申请号:US35018440
申请日:1940-08-03
Applicant: PAPER CHEMISTRY INST
Inventor: DEN AKKER JOHANNES A VAN
IPC: G01J3/40
CPC classification number: G01J3/40
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5.Method and apparatus for measuring the water resistance of paper 失效
Title translation: 测量纸张耐水性的方法和装置公开(公告)号:US2253356A
公开(公告)日:1941-08-19
申请号:US28984239
申请日:1939-08-12
Applicant: PAPER CHEMISTRY INST
Inventor: DEN AKKER JOHANNES A VAN
IPC: G01N21/64
CPC classification number: G01N21/6447
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公开(公告)号:US2232086A
公开(公告)日:1941-02-18
申请号:US20901138
申请日:1938-05-20
Applicant: PAPER CHEMISTRY INST
Inventor: DEN AKKER JOHANNES A VAN
IPC: G06G3/08
CPC classification number: G06G3/08
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公开(公告)号:US2411672A
公开(公告)日:1946-11-26
申请号:US50795843
申请日:1943-10-28
Applicant: PAPER CHEMISTRY INST
Inventor: DEN AKKER JOHANNES A VAN
IPC: G01J3/42
CPC classification number: G01J3/42
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8.Method of determining the receptivity of sheet materials to coatings, inks, and the like 失效
Title translation: 确定片材对涂料,油墨等的接受性的方法公开(公告)号:US2353852A
公开(公告)日:1944-07-18
申请号:US43382242
申请日:1942-03-07
Applicant: PAPER CHEMISTRY INST
Inventor: ROWLAND BEN W , DEN AKKER JOHANNES A VAN
IPC: G01N33/34
CPC classification number: G01N33/346
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公开(公告)号:US2350001A
公开(公告)日:1944-05-30
申请号:US40917441
申请日:1941-09-02
Applicant: PAPER CHEMISTRY INST
Inventor: DEN AKKER JOHANNES A VAN
IPC: G01N21/33
CPC classification number: G01N21/33
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公开(公告)号:US2329959A
公开(公告)日:1943-09-21
申请号:US32410640
申请日:1940-03-15
Applicant: PAPER CHEMISTRY INST
Inventor: DEN AKKER JOHANNES A VAN
CPC classification number: G01N33/346 , G01N21/64
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