Patents by Inventor Christopher J. Mathews

Christopher J. Mathews 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: 11950036
    Abstract: An electronic device can include a housing defining an aperture and a display positioned in the aperture. The display and the housing can define an internal volume in which a speaker assembly is positioned. The speaker assembly can include a speaker module and a speaker enclosure in fluid communication, with the speaker enclosure at least partially defining a speaker volume.
    Type: Grant
    Filed: February 7, 2023
    Date of Patent: April 2, 2024
    Assignee: APPLE INC.
    Inventors: Paul X. Wang, Chanjuan Feng, Christopher Wilk, Dinesh C. Mathew, Keith J. Hendren, Stuart M. Nevill, Daniel K. Boothe, Nicholas A Rundle, Simon S. Lee, Xiang Zhang, Thomas H. Tsang, Rebecca J. Mikolajczyk
  • Patent number: 6046136
    Abstract: This invention relates to novel optionally substituted heterocyclic N-oxide compounds of formula (I): ##STR1## wherein: R, R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, A, X, Z and m are defined herein. In other aspects, this invention relates to herbicidal compositions containing a optionally substituted heterocyclic N-oxide compound or derivative thereof and an agriculturally acceptable carrier and to a method of controlling undesirable vegetation by applying to an area where control is desired an herbicidally effective amount of an optionally substituted heterocyclic N-oxide compound or derivative thereof.
    Type: Grant
    Filed: June 24, 1997
    Date of Patent: April 4, 2000
    Assignee: Zeneca Limited
    Inventors: Donald R. James, Christopher J. Mathews
  • Patent number: 5739353
    Abstract: This invention relates to substituted N-arylindoles, a process for producing them and their use as herbicides. In particular, this invention relates to substituted N-arylindoles of the formula ##STR1## wherein R, R.sup.3, X, Z, n and k are defined herein.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: April 14, 1998
    Assignee: Zeneca Limited
    Inventors: Ferenc M. Pallos, Christopher J. Mathews
  • Patent number: 5599774
    Abstract: Substituted N-arylindoles, a process for producing them and their use as herbicides. In particular, substituted N-arylindoles of the formula ##STR1## are disclosed in which: R is hydrogen; halogen; nitro; cyano; alkyl; alkoxy; alkenyloxy; alkynyloxy; alkoxyalkyl; carbonylalkoxy; alkyloxyalkoxy; cyanoalkoxy; benzyloxy; alkoxycarbonylalkoxy; alkylcarbonylalkoxy; haloalkyl; hydroxalkyl; formyl; azido; carboxy or its salts; COOalkyl; amino; substituted amino wherein the substituents are alkyl, alkoxy, hydroxy, formyl, alkylcarbonyl, substituted alkylcarbonyl substituted with carboxy or alkoxycarboxy, alkylsulfonyl, haloalkylsulfonyl, aminocarbonyl, (di)alkylaminocarbonyl, alkoxycarbonyl, alkoxyalkyl, hydroxycarbonylalkyl, alkoxycarbonylalkyl, amino or (di)alkyl amino; carboxyamido; substituted carboxyamido wherein said substituents can be selected from alkyl, alkylsulfonyl, and haloalkylsulfonyl; sulfonamido wherein the N is substituted with hydrogen and/or alkyl; YR.sup.4 wherein Y is O or S(O).sub.m and R.sup.
    Type: Grant
    Filed: December 31, 1992
    Date of Patent: February 4, 1997
    Assignee: Imperial Chemical Industries PLC
    Inventors: Ferenc M. Pallos, Christopher J. Mathews
  • Patent number: 5451566
    Abstract: Herbicidal 1-aryl pyrrolopyridine compounds of the formula: ##STR1## wherein at least one of Y, Z or J is N or N--O and the remainder of Y, Z or J is C--R.
    Type: Grant
    Filed: November 17, 1993
    Date of Patent: September 19, 1995
    Assignee: Zeneca Limited
    Inventor: Christopher J. Mathews
  • Patent number: 5190574
    Abstract: A herbicidal compound of formula (I): ##STR1## in which the dotted line indicates the presence of two double bonds arranged so as to form a fused hetero-aromatic ring system;Py is an optionally substituted pyrazole ring;W is O or NR.sup.1 ; where R.sup.1 is hydrogen or lower alkyl;X is (CH.sub.2).sub.n, CH.dbd.CH, CH(OR.sup.5)CH.sub.2, COCH.sub.2 ;where n is 0, 1 or 2;R.sup.2 and R.sup.3 are independently selected from H, optionally substituted alkyl, alkenyl or alkynyl, halogen, NR.sup.6 R.sup.7, or R.sup.2 and R.sup.3 together with the carbon to which they are attached form an optionally substituted alkenyl or cycloalkyl group;R.sup.4 is CO.sub.2 R.sup.8, CN, COR.sup.8, CH.sub.2 OR.sup.8, CH(OH)R.sup.8, CH(OR.sup.8)R.sup.9, CSNH.sub.2, COSR.sup.8, CSOR.sup.8, CONHSO.sub.2 R.sup.8, CONR.sup.10 R.sup.11, CONHNR.sup.10 R.sup.11, CONHN.sup.+ R.sup.10 R.sup.11 R.sup.12 R.sup.14-, CO.sub.2.sup.- R.sup.15+ or COON.dbd.CR.sup.10 R.sup.11 ;R.sup.15+ is an agriculturally acceptable cation and R.sup.
    Type: Grant
    Filed: February 7, 1991
    Date of Patent: March 2, 1993
    Assignee: Imperial Chemical Industries plc
    Inventors: David P. J. Pearson, John E. D. Barton, Christopher J. Mathews, David Cartwright, Susan P. Barnett
  • Patent number: 5176737
    Abstract: A herbicidal compound of formula (I): ##STR1## in which Ar is an optionally substituted aryl or heterocyclic ring system:R.sup.1 and R.sup.2 are independently selected from H, optionally substituted alkyl, alkenyl or akynyl, halogen, NR.sup.a R.sup.b, or R.sup.1 and R.sup.2 together with the carbon to which they are attached form an optionally substituted alkenyl or cycloalkyl group;R.sup.3 is CO.sub.2 R.sup.4, CN, COR.sup.4, CH.sub.2 OR.sup.4, CH.sub.4 (OH)R.sup.4, CH(OR.sup.4)R.sup.5, CH.sub.2 OSO.sub.6 R.sup.4, CH.sub.2 OSO.sub.6 R.sub.4, CH.sub.2 ONR.sup.6 R.sup.7, CSNH.sub.2, COSR.sup.4, SCOR.sup.4, COHNSO.sub.2 R.sup.4, CONR.sup.6 R.sup.7, CONHNR.sup.6 R.sup.7, CONHN.sup.+ R.sup.6 R.sup.7 R.sup.8 Y.sup.-2, CO.sub.2.sup.- M.sup.+ or COON.dbd.CR.sup.6 R.sup.7 ;M.sup.+ is an agriculturally acceptable cation;Y.sup.- is an agriculturally acceptable anion;R.sup.4, and R.sup.5 are independently selected from H or an optionally substituted alkyl, aryl, alkenyl or alkynyl group;R.sup.6, R.sup.7, R.sup.8, R.sup.
    Type: Grant
    Filed: February 7, 1991
    Date of Patent: January 5, 1993
    Assignee: Imperial Chemical Industries PLC
    Inventors: Ewan J. T. Chrystal, John E. D. Barton, David Cartwright, Christopher J. Mathews