Chemistry: fertilizers – Processes and products – Organic material-containing
Reexamination Certificate
2005-05-12
2010-06-08
Langel, Wayne (Department: 1793)
Chemistry: fertilizers
Processes and products
Organic material-containing
C071S029000, C071S033000, C071S048000, C071S049000, C071S053000, C071S064110
Reexamination Certificate
active
07731775
ABSTRACT:
Several compositions of matter have been discovered that can be used in the manufacture of slow-release fertilizers that contain all of the essential elements needed by plants and humans. Slow-release fertilizers manufactured with these formulations can be used on mineral stressed soils to increase the quality and production of food crops grown on them. Additives, including phosphogypsum, silica sand, natural gypsum, clay, and coal dust, facilitate the timing of the release of the essential elements into the soil.
REFERENCES:
patent: 2867522 (1959-01-01), Facer
patent: 2976119 (1961-03-01), Manning et al.
patent: 3130038 (1964-04-01), Thomas et al.
patent: 4324577 (1982-04-01), Sepehri-Nik
patent: 4402756 (1983-09-01), Prine
patent: 4457781 (1984-07-01), Palmer et al.
patent: 5733070 (1998-03-01), Angell
patent: 6231767 (2001-05-01), Krofchak et al.
patent: 6287358 (2001-09-01), Mason et al.
patent: 2003/0115920 (2003-06-01), Palmer
patent: 890569 (1962-03-01), None
patent: 2050335 (1981-01-01), None
“Essential Plant Nutrients”, http://web.archive.org/web/20010819100732/http://soils.clemson.edu/elements.htm, Aug. 19, 2001.
Hignett, The Use of Urea in Compound Fertilizers, Chemical Age of India, Nov. 1967, 18(11):800-809.
Hignett, New and Improved Fertilizer Materials based on Urea, Second Interregional Fertilizer Symposium, Sep. 21, 1971-Oct. 1, 1971 and Oct. 2, 1971-Oct. 12, 1971, 5-30.
Whittaker, Lundstrom, Hendricks, Reaction between urea and Gypsum, Industrial and Engineering Chemistry, Nov. 1933, 25(11):1280-1282.
Gupta, NP/NPK Fertilisers using Urea and Superphosphate, FAI-ISMA Seminar on Technology of Compound Fertilisers based on Urea, and Use and Benefication of Low Grade Phosphate Rock, Feb. 1976, I/2-1-I/2-8.
Hoek, Granulation of Urea Compound Fertilisers Within UKF/Stamicarbon, FAI-ISMA Seminar on Technology of Compound Fertilisers based on Urea, and Use and Benefication of Low Grade Phosphate Rock, Feb. 1976, 11/1-11/1-12.
Agarwal, NP/NPK Fertilisers through Nitrophosphate Route and its Prospects in India, FAI-ISMA Seminar on Technology of Compound Fertilisers based on Urea, and Use and Benefication of Low Grade Phosphate Rock, Feb. 1976, II/2-1.
Roy, TSP and Its Compound Fertiliser Production, FAI-ISMA Seminar on Technology of Compound Fertilisers based on Urea, and Use and Benefication of Low Grade Phosphate Rock, Feb. 1976, III/1-16-III/1-18.
Kuwabara, Hayamizu, Hatakeyama, Trends in Urea-Based Granular Compound Fertilizer Technology, Granular Fertilizers and their Production, 1977, pp. 125-147.
Foth, H.D., et al. “Soil pH Management” in Soil Fertility, 2nded., Lewis Publishers, New York, NY, 1997, pp. 93-253.
Tan, Soils and the Environment, Environmental Soil Science, 2000, pp. 1-87.
Paton, T.R. “The Composition of the Lithosphere” in The formation of soil material, Boston MA, 1978, pp. 1- 45.
Troeh, Thompson, Soil Chemistry, Soils and Soil Fertility, 1993, pp. 129-147.
“Essential Plant Nutrients”, http://web.archive.org/web/20010819100732/http://soils.clemson.edu/elements.htm, Aug. 19, 2001.
Moffat, A.S. “Engineering plants cope with metals”Science, 1999, vol. 285, pp. 369-370.
Kay Heidi
Palmer Jay W.
Langel Wayne
Saliwanchik Lloyd & Saliwanchik
University of South Florida
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