US4956155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for sterilizing contact lenses
Assignee: University of Oklahoma
•
Filing: 1989-03-29
•
Granted: 1990-09-11
•
Expires: 2009-03-29
Abstract
Abstract Apparatus for sterilizing contact lenses wherein the lenses are moved in a circular orbit within a microwave oven through variations of energy levels in the microwave field in the oven, with the orbit of movement being spaced from the floor of the oven.
Inventors
- 👤 Michael D. Rohrer
- 👤 Ronald A. Bulard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:12
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/02; A61L12/00; A61L12/02; A61L12/06; A61L12/066; A61L2/08; A61L2/12; A61L2103/00; A61L2103/05
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
206 words
An apparatus for sterilizing a contact lens in a microwave oven and rehydrating the contact lens with fluid, said apparatus being insertable into a microwave oven having a floor, comprising: a container constructed of a material which is transparent to microwaves having a bottom, a top, and at least one side wall wherein the bottom and the side wall cooperate to form a retaining space capable of retaining fluid; means for supporting a contact lens in the retaining space capable of permitting contact between the contact lens and the fluid and capable of preventing any portion of the contact lens from touching another portion of the contact lens; means for rehydrating the contact lens with fluid after radiating the contact lens with microwaves; and means for moving the container through various locations of microwave energy levels within the oven in spaced relation from the floor of the oven until the lens is sterilized comprising: a turntable adapted to rest on the floor of the microwave oven; and a support comprising an upright portion extending upwardly from the turntable and a transverse portion which extends transversely from the center of the turntable adapted to support the container in spaced relation from a vertical axis through the turntable.
Claim 2
Independent Claim
206 words
An apparatus for sterilizing a contact lens in a microwave oven and rehydrating the contact lens with fluid, said apparatus being insertable into a microwave oven having a floor, comprising: a container constructed of a material which is transparent to microwaves having a bottom, a top, and at least one side wall wherein the bottom and the side wall cooperate to form a retaining space capable of retaining fluid; means for supporting a contact lens in the retaining space capable of permitting contact between the contact lens and the fluid and capable of preventing any portion of the contact lens from touching another portion of the contact lens; means for rehydrating the contact lens with fluid after radiating the contact lens with microwaves; and means for moving the container through various locations of microwave energy levels within the oven in spaced relation from the floor of the oven until the lens is sterilized comprising: a turntable adapted to rest on the floor of the microwave oven; and a support comprising an upright portion extending upwardly from the turntable and a transverse portion which extends transversely from the center of the turntable adapted to support the container in spaced relation from a vertical axis through the turntable.
Claim 3
Dependent Claim
31 words
The apparatus of claim 1 wherein the transverse portion of the support is characterized by a portion on which the container rests, and wherein said transverse portion is transparent to microwaves.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-09-10 | 1994-03-12 | 1994-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-09-10 | 1998-03-12 | 1998-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-09-10 | 2002-03-12 | 2002-09-11 | $7700.00 | Window Closed / Lapsed |