Patents by Inventor James A. Green, II
James A. Green, II has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 5393778Abstract: Oligomeric thiocarbonates such as hexathiodicarbonate salts and thioesters are used as pesticides and preservatives. Certain oligomeric thiocarbonate salts, notably quaternary ammonium hexathiodicarbonates, are prepared. The compounds are stabilized with added base and/or sulfide.Type: GrantFiled: November 30, 1993Date of Patent: February 28, 1995Assignee: Union Oil Company of CaliforniaInventors: James A. Green, II, Donald C. Young
-
Patent number: 5384329Abstract: Oligomeric thiocarbonates such as hexathiodicarbonate salts and thioesters are used as pesticides and preservatives. Certain oligomeric thiocarbonate salts, notably quaternary ammonium hexathiodicarbonates, are prepared. The compounds are stabilized with added base and/or sulfide.Type: GrantFiled: December 30, 1993Date of Patent: January 24, 1995Assignee: Union Oil Company of CaliforniaInventors: James A. Green, II, Donald C. Young
-
Patent number: 5360782Abstract: Aqueous thiocarbonate solutions are stabilized by the addition of base, sulfide and/or polysulfide, and the stability and safety of the more concentrated solutions containing 1 weight percent or more equivalent CS.sub.2 as a thiocarbonate are achieved as reflected by significant reduction of CS.sub.2 partial pressure in such solutions. Also, deposit formation in irrigation systems delivering such thiocarbonates, such as drip emitters and sprinkler heads, is reduced or eliminated with minor amounts of sodium hexametaphosphate.Type: GrantFiled: October 22, 1993Date of Patent: November 1, 1994Assignee: Union Oil Company of CaliforniaInventors: Donald C. Young, James A. Green, II
-
Patent number: 5340593Abstract: Aqueous thiocarbonate solutions are stabilized by the addition of base, sulfide and/or polysulfide, and the stability and safety of the more concentrated solutions containing 1 weight percent or more equivalent CS.sub.2 as a thiocarbonate are achieved as reflected by significant reduction of CS.sub.2 partial pressure in such solutions.Type: GrantFiled: March 15, 1993Date of Patent: August 23, 1994Assignee: Union Oil Company of CaliforniaInventors: James A. Green, II, Donald C. Young
-
Patent number: 5332580Abstract: Aqueous thiocarbonate solutions are stabilized by the addition of base, sulfide and/or polysulfide, and the stability and safety of the more concentrated solutions containing 1 weight percent or more equivalent CS.sub.2 as a thiocarbonate are achieved as reflected by significant reduction of CS.sub.2 partial pressure in such solutions. Also, deposit formation in irrigation systems delivering such thiocarbonates, such as drip emitters and sprinkler heads, is reduced or eliminated with minor amounts of sodium hexametaphosphate.Type: GrantFiled: November 25, 1992Date of Patent: July 26, 1994Assignee: Union Oil Company of CaliforniaInventors: Donald C. Young, James A. Green, II
-
Patent number: 5288753Abstract: Oligomeric thiocarbonates such as hexathiodicarbonate salts and thioesters are used as pesticides and preservatives. Certain oligomeric thiocarbonate salts, notably quaternary ammonium hexathiodicarbonates, are prepared. The compounds are stabilized with added base and/or sulfide.Type: GrantFiled: December 28, 1989Date of Patent: February 22, 1994Assignee: Union Oil Company of CaliforniaInventors: James A. Green, II, Donald C. Young
-
Patent number: 5288495Abstract: Aqueous thiocarbonate solutions are stabilized by the addition of base, sulfide and/or polysulfide, and the stability and safety of the more concentrated solutions containing 1 weight percent or more equivalent CS.sub.2 as a thiocarbonate are achieved as reflected by significant reduction of CS.sub.2 partial pressure in such solutions. The stabilized thiocarbonate solutions are employed to control pests in soil.Type: GrantFiled: September 8, 1992Date of Patent: February 22, 1994Assignee: Union Oil Company of CaliforniaInventors: James A. Green, II, Donald C. Young
-
Patent number: 5256424Abstract: Aqueous thiocarbonate solutions are stabilized by the addition of base, sulfide and/or polysulfide, and the stability and safety of the more concentrated solutions containing 1 weight percent or more equivalent CS.sub.2 as a thiocarbonate are achieved as reflected by significant reduction of CS.sub.2 partial pressure in such solutions.Type: GrantFiled: May 31, 1991Date of Patent: October 26, 1993Assignee: Union Oil Company of CaliforniaInventors: James A. Green, II, Donald C. Young
-
Patent number: 5173306Abstract: Aqueous thiocarbonate solutions are stabilized by the addition of base, sulfide and/or polysulfide, and the stability and safety of the more concentrated solutions containing 1 weight percent or more equivalent CS.sub.2 as a thiocarbonate are achieved as reflected by significant reduction of CS.sub.2 partial pressure in such solutions.Type: GrantFiled: June 28, 1991Date of Patent: December 22, 1992Assignee: Union Oil Company of CaliforniaInventors: James A. Green, II, Donald C. Young
-
Patent number: 5167966Abstract: Aqueous thiocarbonate solutions are stabilized by the addition of base, sulfide and/or polysulfide, and the stability and safety of the more concentrated solutions containing 1 weight percent or more equivalent CS.sub.2 as a thiocarbonate are achieved as reflected by significant reduction of CS.sub.2 partial pressure in such solutions.Type: GrantFiled: August 8, 1991Date of Patent: December 1, 1992Assignee: Union Oil Company of CaliforniaInventors: James A. Green, II, Donald C. Young
-
Patent number: 5165920Abstract: Aqueous thiocarbonate solutions are stabilized by the addition of base, sulfide and/or polysulfide, and the stability and safety of the more concentrated solutions containing 1 weight percent or more equivalent CS.sub.2 as a thiocarbonate are achieved as reflected by significant reduction of CS.sub.2 partial pressure in such solutions.Type: GrantFiled: March 27, 1991Date of Patent: November 24, 1992Assignee: Union Oil Company of CaliforniaInventors: James A. Green, II, Donald C. Young
-
Patent number: 5145521Abstract: Solutions of sulfuric acid having a polyamide, such as gelatin, dissolved therein are less corrosive than polyamide-free solutions of sulfuric acid of equal sulfuric acid concentration, while retaining essentially all of the acidity. The polyamide-safened sulfuric acid solutions of the invention are useful in place of sulfuric acid solutions for many purposes, e.g., as cleaners and herbicides, and for the treatment of cellulosic materials.Type: GrantFiled: June 7, 1991Date of Patent: September 8, 1992Assignee: Union Oil Company of CaliforniaInventor: James A. Green, II
-
Patent number: 5041240Abstract: Aqueous thiocarbonate solutions are stabilized by the addition of base, sulfide and/or polysulfide, and the stability and safety of the more concentrated solutions containing 1 weight percent or more equivalent CS.sub.2 as a thiocarbonate are achieved as reflected by significant reduction of CS.sub.2 partial pressure in such solutions.Type: GrantFiled: October 28, 1988Date of Patent: August 20, 1991Assignee: Union Oil Company of CaliforniaInventors: James A. Green, II, Donald C. Young
-
Patent number: 5022912Abstract: The invention is directed to the fumigation of soils, enclosed spaces, agricultural products and other commodities, etc., using compositions which decompose to form carbon disulfide and certain other biocidal materials. Such fumigation can be used to control bacteria, fungi, insects, nematodes, rodents, nitrification, and weeds.Fumigant compositions are described herein as "thiocarbonates," including, without limitation, salts of trithiocarbonic acid and tetrathiocarbonic acid, compositions having empirical formulae intermediate to these acids salts (such as MCS.sub.3.7, wherein M is a divalent metal ion), and compositions containing substances in addition to thiocarbonates, such as a stabilized ammonium tetrathiocarbonate which contains ammonium sulfide, i.e., (NH.sub.4).sub.2 CS.sub.4 (NH.sub.4).sub.2 S.The compositions are generally water soluble and can be prepared, stored, and used in aqueous solutions.Type: GrantFiled: December 3, 1987Date of Patent: June 11, 1991Assignee: Union Oil Company of CaliforniaInventors: Donald C. Young, James A. Green, II
-
Patent number: 4726144Abstract: The invention is directed to the fumigation of soils, enclosed spaces, agricultural products and other commodities, etc., using compositions which decompose to form carbon disulfide and certain other biocidal materials. Such fumigation can be used to control bacteria, fungi, insects, nematodes, rodents, and weeds.Fumigant compositions are described herein as "thiocarbonates," including, without limitation, salts of trithiocarbonic acid and tetrathiocarbonic acid, compositions having empirical formulae intermediate to these acid salts (such as MCS.sub.3.7, wherein M is a divalent metal ion), and compositions containing substances in addition to thiocarbonates [such as a stabilized ammonium tetrathiocarbonate which contains ammonium sulfide, i.e., (NH.sub.4).sub.2 CS.sub.4.(NH.sub.4).sub.2 S].The compositions are generally water soluble and can be prepared, stored, and used in aqueous solutions.Type: GrantFiled: November 16, 1984Date of Patent: February 23, 1988Assignee: Union Oil Company of CaliforniaInventors: Donald C. Young, James A. Green, II
-
Patent number: 4701555Abstract: The biuret content of biuret-containing urea is reduced by contacting a solution or melt of biuret-containing urea with a polar adsorbent under conditions sufficient to remove at least a portion of biuret from the urea. The resulting biuret-containing adsorbent can be regenerated for further use by contact with a polar desorbent under conditions sufficient to desorb at least a portion of the biuret contained on the adsorbent. Optionally, biuret can be recovered by recovering the biuret-containing desorbent, and biuret concentration in the desorbent can be increased by recycling the biuret-containing desorbent into contact with biuret-containing adsorbents, and biuret can be recovered from the desorbent by low temperature crystallization.Type: GrantFiled: July 10, 1985Date of Patent: October 20, 1987Assignee: Union Oil Company of CaliforniaInventors: Donald C. Young, James A. Green, II
-
Patent number: 4698443Abstract: Purified biuret is recovered from mixtures containing biuret and higher molecular weight urea condensation products by contacting melts or solutions of such mixtures with a polar adsorbent and extracting biuret from the adsorbent with a polar desorbent. The useful biuret-containing mixtures also may contain urea. These methods are capable of recovering biuret of 99.9 percent plus purity from mixture containing higher molecular weight urea condensations products such as triuret, melamine, ammelide, and others. The biuret-containing desorbent can be recycled into contact with biuret-containing adsorbents to increase its biuret concentration, concentrated by evaporation of otherwise, and/or treated to crystallize biuret. An integrated process is provided which involves pyrolyzing urea to form biuret and higher molecular weight condensation products and selectively recovering biuret from the resulting pyrolyzed urea as described.Type: GrantFiled: July 10, 1985Date of Patent: October 6, 1987Assignee: Union Oil Company of CaliforniaInventors: Donald C. Young, James A. Green, II
-
Patent number: 4658059Abstract: Methods are provided for removing biuret from biuret-containing aqueous urea solutions which methods involve contacting a quantity of a biuret-containing aqueous urea feed solution with the hydroxide ion form of an anion exchanger under conditions sufficient to remove at least a portion of the biuret from the feed solution, and regenerating the resulting biuret-containing anion exchanger, at least in part, by contact with a substantially non-alkaline aqueous regenerant under conditions sufficient to remove at least a portion of the biuret from the anion exchanger. After completion of the described contacting with the substantially non-alkaline aqueous regenerant, the anion exchanger can optionally be further regenerated by contact with an aqueous solution of a strong base to remove additional quantities of biuret and/or other anion exchanger contaminants such as alkaline earth metal and carbonate ions and/or compounds.Type: GrantFiled: December 30, 1983Date of Patent: April 14, 1987Assignee: Union Oil Company of CaliforniaInventors: Donald C. Young, James A. Green, II
-
Patent number: 4654442Abstract: Biuret is removed from biuret-containing aqueous urea solutions in a multi-cycle process which involves sequential (A) removal of biuret by contact with an anion exchanger and (B) regeneration of the anion exchanger, in which method, in one or more cycles, the anion exchanger regenerant comprises an aqueous solution of a strong base which has been employed to regenerate the anion exchanger in a previous cycle. This procedure allows for recycling, and thus reuse, of the strong base regenerant which results in significant economy.Type: GrantFiled: December 30, 1983Date of Patent: March 31, 1987Assignee: Union Oil Company of CaliforniaInventors: Donald C. Young, James A. Green, II
-
Patent number: 4650901Abstract: Methods are provided for removing biuret from biuret-containing aqueous urea solutions by contacting the biuret-containing urea solutions with the hydroxide ion form of an anion exchanger under anion exchange conditions in which methods one or more aqueous process streams are either formed from materials which are substantially or completely free of alkaline earth metal and/or carbonate impurities or which process streams are treated either before or during their use in the anion exchange process to reduce their content of contaminant alkaline earth metal and/or carbonate compounds. The anion exchanger can be washed and regenerated with one or more aqueous media including water, aqueous solutions of strong base, acidic chloride solutions, and/or other aqueous solutions, and either batch or continuous (fixed bed) contacting can be employed.Type: GrantFiled: December 30, 1983Date of Patent: March 17, 1987Assignee: Union Oil Company of CaliforniaInventors: Donald C. Young, James A. Green, II