Classifying – separating – and assorting solids – Sorting special items – and certain methods and apparatus for... – Condition responsive means controls separating means
Reexamination Certificate
2005-02-15
2005-02-15
Walsh, Donald P. (Department: 3653)
Classifying, separating, and assorting solids
Sorting special items, and certain methods and apparatus for...
Condition responsive means controls separating means
C250S339120
Reexamination Certificate
active
06855901
ABSTRACT:
An apparatus and process that makes use of spectral information in the mid-infrared range (400 to 4500 cm−1) to identify recyclable materials containing barrier polymers from recyclable materials not containing barrier polymers, which includes projecting light containing the mid-infrared (MIR) range onto materials to be analyzed, dispersing the MIR light that has reflected from or passed through the materials or both into various wavelengths, measuring the intensity of the MIR light at least one wavelength responsive to differences between the materials, measuring the intensity of the MIR light at least one wavelength not responsive to differences between the materials in order to provide a reference, and comparing the measurements in order to identify barrier materials from non-barrier materials.
REFERENCES:
patent: 3305528 (1967-02-01), Wynstra et al.
patent: 4017194 (1977-04-01), Conroy et al.
patent: 4048141 (1977-09-01), Doorakian et al.
patent: 4171420 (1979-10-01), Doorakian et al.
patent: 5089588 (1992-02-01), White et al.
patent: 5134218 (1992-07-01), Brennan et al.
patent: 5134291 (1992-07-01), Ruhl, Jr. et al.
patent: 5141110 (1992-08-01), Trischan et al.
patent: 5143998 (1992-09-01), Brennan et al.
patent: 5149768 (1992-09-01), White et al.
patent: 5164472 (1992-11-01), White et al.
patent: 5260576 (1993-11-01), Sommer, Jr. et al.
patent: 5275853 (1994-01-01), Silvis et al.
patent: 5318172 (1994-06-01), Kenny et al.
patent: 5401814 (1995-03-01), Schomaker et al.
patent: 5489778 (1996-02-01), Burmester et al.
patent: 5502559 (1996-03-01), Powell et al.
patent: 5510619 (1996-04-01), Zachmann et al.
patent: 5615778 (1997-04-01), Kaiser et al.
patent: 5873470 (1999-02-01), Davis et al.
patent: 5966217 (1999-10-01), Roe et al.
patent: 6060677 (2000-05-01), Ulrichsen et al.
patent: 6144004 (2000-11-01), Doak
patent: 6353197 (2002-03-01), Ulrichsen et al.
patent: 6610981 (2003-08-01), Sommer, Jr.
Journal of Polymer Science, vol. 7, 1963, p. 2135.
Glass Terry W.
Guenard Robert D.
Leugers Mary A.
Rich John T.
Shafi Muhammad A.
National Recovery Technologies Inc.
Rodriguez Joseph C
Walsh Donald P.
Wyatt Tarrant & Combs LLP
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