Monitoring sheet material

Details Monitoring sheet material Monitoring sheet material

1984-05-25

1988-01-05

Gruber, Felix D.

Boots, shoes, and leggings

250339, 364498, G06F 1520, G06F 15353

Patent

active

047180269

ABSTRACT:
Inorganic constituents of cigarette paper are identified and monitored by scanning a region of the infra red spectrum of the paper, computing first and second order derivatives of the scan, comparing the first and second order derivatives by a best fit comparison with reference spectral data, and computing concentrations in the paper of the identified inorganic constituents.

REFERENCES:
patent: 3793524 (1974-02-01), Howarth
patent: 3851175 (1974-11-01), Dahlin et al.
patent: 4267572 (1981-05-01), Witte
patent: 4299487 (1981-11-01), Sengoku et al.
patent: 4363968 (1982-12-01), McGowan et al.
patent: 4455084 (1984-06-01), Webb, Jr. et al.

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