John O Abraham

US Patent:

44053800, Sep 20, 1983

Filed:

Jul 6, 1981

Appl. No.:

6/280914

Inventors:

Cecil B. Griffith - North Royalton OH
Jerry D. Thomas - North Olmsted OH
Dionisyj W. Demianczuk - Parma OH
John K. Abraham - Broadview Heights OH
Joseph E. Franklin - Medina OH

Assignee:

Republic Steel Corporation - Cleveland OH

International Classification:

C22C 3812

US Classification:

148 2

Abstract:

High strength, low alloy steel is produced, preferably as a hot rolled article (e. g. strip), to have a rimmed skin of essentially ferrite while having a main body or core which is aluminum-killed and comprises, for superior mechanical properties including yield strength, a suitable quantity of columbium and/or vanadium. The carbon, manganese and sulfur contents of the base metal, which provides the skin and plus the addition, the core, are preferably limited to provide special results as low alloy steel and also, by the same limitations, to provide auto sulfide shape control and thus to avoid unwanted directionality regarding toughness and bendability. The steel is made by pouring a mold 80-95% full of the base composition, then allowing the steel to rim for several minutes, and after a shell has solidified, continuing to pour while adding Al and Cb or V to the teemed stream, thereby providing an ingot with the above killed core, which can be hot reduced as desired.

US Patent:

41429222, Mar 6, 1979

Filed:

Feb 2, 1978

Appl. No.:

5/874560

Inventors:

John K. Abraham - Broadview Heights OH
Peter J. Vander Arend - Brecksville OH

Assignee:

Republic Steel Corporation - Cleveland OH

International Classification:

C22C 3806
C22C 3812

US Classification:

148 36

Abstract:

High strength low alloy steels, produced as strip or the like by hot rolling, permit unusual economy of alloying ingredients while achieving superior mechanical properties. With a composition containing specifically low carbon and low manganese, and moderate proportions of both columbium and vanadium, preferably with no requirement of silicon. Yield strengths in a range to and above 80 ksi are attainable depending on the total of columbium and vanadium, and excellent properties of toughness and formability are exhibited in transverse as well as longitudinal directions without adding special sulfide shape control agents. Processing conditions, for hot rolling and coiling, can be selected over wide temperature ranges, for convenience of control, e. g. to achieve product uniformity. Rolling load requirements are acceptable and can be reduced to facilitate production of thin strip by reducing the ratio of columbium to vanadium, without impairing the way in which columbium appears to effectuate superior realization of the strengthening effect of vanadium in those compositions.

US Patent:

41417615, Feb 27, 1979

Filed:

Jul 13, 1978

Appl. No.:

5/924248

Inventors:

John K. Abraham - Broadview Heights OH
Peter J. Vander Arend - Brecksville OH

Assignee:

Republic Steel Corporation - Cleveland OH

International Classification:

C22C 3806
C22C 3812
C22C 3814

US Classification:

148 36

Abstract:

High strength low alloy steels, produced as strip or the like by hot rolling, permit unusual economy of alloying ingredients while achieving superior mechanical properties, with a composition containing specifically low carbon and low manganese, and moderate proportions of both columbium and titanium, preferably with no requirement of silicon. Yield strengths in a range to and well above 80 ksi are attainable depending on the content of columbium and titanium, and good properties of formability are exhibited in the transverse direction. Processing conditions, for hot rolling and coiling, can be selected over reasonably convenient ranges of temperature conditions, while rolling load requirements are acceptable for products of various thicknesses. The steels are notably useful for thin strip, satisfying the usual mechanical property needs of such products with relatively low cost.

US Patent:

44379021, Mar 20, 1984

Filed:

Oct 19, 1981

Appl. No.:

6/312510

Inventors:

John W. Pickens - Strongsville OH
John K. Abraham - Broadview Heights OH
Raymond E. Mintus - Warren OH
Millicent H. Thomas - Broadview Heights OH

Assignee:

Republic Steel Corporation - Cleveland OH

International Classification:

C21D 810

US Classification:

148 12F

Abstract:

Dual-phase steel, consisting essentially of a ferrite matrix containing islands of martensite, is produced by batch annealing of hot or cold rolled steel having carbon below 0. 2% and manganese below 2% and at least critical contents of copper (0. 4%) and nickel (0. 6%), with heat to the alpha plus gamma region, followed by slow cooling. This procedure is effective and controllable, and yields a dual-phase steel product that has high tensile strength with excellent elongation properties and that develops good yield strength upon moderate deformation.

US Patent:

20180303976, Oct 25, 2018

Filed:

Oct 3, 2016

Appl. No.:

15/765309

Inventors:

- PHILADELPHIA PA, US
Constantinos Ketonis - Philadelphia PA, US
Javad Parvizi - Gladwyne PA, US
Irving M. Shapiro - Philadelphia PA, US
Christopher S. Adams - Lansdowne PA, US
John A. Abraham - Philadelphia PA, US

Assignee:

THOMAS JEFFERSON UNIVERSITY - PHILADELPHIA PA

International Classification:

A61L 27/54
A61L 27/36

Abstract:

A functionalized tissue having covalently bound antibiotics and methods for producing the functionalized tissue having bound antibiotics comprising; providing a tissue having a sufficient number of primary amine groups on the tissue; coupling and deprotecting one or more F-moc AEEA linkers using HATU chemistry to the primary amine groups; and coupling an antibiotic to said AEEA linkers using HATU chemistry.