HYCOR BIOMEDICAL INC /DE/

Q: Mar 31 2004

FY: Dec 31 2003

Q: Sep 30 2003

Q: Jun 30 2003

Q: Mar 31 2003

FY: Dec 31 2002

Q: Sep 30 2002

Q: Jun 30 2002

Q: Mar 31 2002

FY: Dec 31 2001

Q: Sep 30 2001

Q: Jun 30 2001

Q: Mar 31 2001

FY: Dec 31 2000

Q: Sep 30 2000

Q: Jun 30 2000

Q: Mar 31 2000

FY: Dec 31 1999

Q: Sep 30 1999

Q: Jun 30 1999

7,9

Financial statements and exhibits

7,9

7,9

5,7

7,9

7,9

2,7

2,7

Certification of termination of registration of a class of securities (Section 12(g))

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Registration statement under Securities Act of 1933 to be offered to employees pursuant to certain plans

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

ANDERSON SAMUEL D

THUNE NELSON F

PHELPS JAMES R

SCHMIDT RICHARD E

DEAL MARY JOANNE

JONES REG P

THOLEN J DAVID

DAVOUDZADEH DAVID PHD

THUNE NELSON F

GORDON DAVID S MD

JONES REG P

DEAL MARY JOANNE

DAVOUDZADEH DAVID PHD

DIMENSIONAL FUND ADVISORS INC

THUNE NELSON F

DAVOUDZADEH DAVID PHD

THUNE NELSON F

JONES REG P

DAVOUDZADEH DAVID PHD

DEAL MARY JOANNE