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Novel drug permeable wall
Patent #: 3938515
Issued on: 02/17/1976
Inventor: Leeper , et al.
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Microsealed pharmaceutical delivery device
Patent #: 3946106
Issued on: 03/23/1976
Inventor: Chien , et al.
Drug delivery device
Patent #: 3967618
Issued on: 07/06/1976
Inventor: Zaffaroni
Intrauterine device having means for changing from uterine-retentive shape to nonuterine-retentive shape
Patent #: 3971367
Issued on: 07/27/1976
Inventor: Zaffaroni
Vaginal medicament dispensing means
Patent #: 3991760
Issued on: 11/16/1976
Inventor: Drobish , et al.
Method for making a microsealed delivery device
Patent #: 3992518
Issued on: 11/16/1976
Inventor: Chien , et al.
Intrauterine device that bioerodes in response to the environment of the uterus and method of using
Patent #: 3993057
Issued on: 11/23/1976
Inventor: Ramwell
Novel drug delivery device
Patent #: 3993073
Issued on: 11/23/1976
Inventor: Zaffaroni
Vaginal Medicament dispensing device
Patent #: 3995633
Issued on: 12/07/1976
Inventor: Gougeon
Vaginal cavity dispensing means and method
Patent #: 3995634
Issued on: 12/07/1976
Inventor: Drobish
Vaginal ring
Patent #: 4012496
Issued on: 03/15/1977
Inventor: Schopflin , et al.
Vaginal drug dispensing device
Patent #: 4016251
Issued on: 04/05/1977
Inventor: Higuchi , et al.
Microsealed pharmaceutical delivery device
Patent #: 4053580
Issued on: 10/11/1977
Inventor: Chien , et al.
Controlled release article
Patent #: 4067961
Issued on: 01/10/1978
Inventor: Laughlin
Drug-delivery device comprising certain polymeric materials for controlled release of drug
Patent #: 4069307
Issued on: 01/17/1978
Inventor: Higuchi , et al.
Method of making vaginal diaphragm
Patent #: 4093490
Issued on: 06/06/1978
Inventor: Ziets, et al.
Device consisting of copolymer having acetoxy groups for delivering drugs
Patent #: 4144317
Issued on: 03/13/1979
Inventor: Higuchi , et al.
Neutrontherapy apparatus using a linear accelerator of electrons
Patent #: 4192998
Issued on: 03/11/1980
Inventor: Azam
Delivery means for biologically active agents comprising hydrophilic polyurethane
Patent #: 4202880
Issued on: 05/13/1980
Inventor: Fildes , et al.
Contraceptive methods and compositions
Patent #: 4264575
Issued on: 04/28/1981
Inventor: Zimmerman , et al.
Contraceptive methods and compositions
Patent #: 4264576
Issued on: 04/28/1981
Inventor: Zimmerman , et al.
Contraceptive methods and compositions Patent #: 4264577
Issued on: 04/28/1981
Inventor: Zimmerman , et al.
February 22, 2003. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
