US4401371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrogel oxygen generator with improved fluid flow
Assignee: Individual
•
Filing: 1980-10-25
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Granted: 1983-08-30
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Expires: 2000-10-25
Abstract
Abstract A contact lens concave-convex in form made of a transparent, optically clear hydrogel polymer containing micro-photoelectrolysis elements to produce hydrogen and oxygen by the electrolysis of water and capillary tubes within the hydrogel polymer to remove the hydrogen and oxygen from the lens and supplying water for electrolysis.
Inventors
- 👤 Charles W. Neefe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:33
CPC Classifications
G; G02; G02C; G02C7/00; G02C7/02; G02C7/04; B; B29; B29D; B29D11/00; B29D11/00009; B29D11/00038; B29D11/00076; A; A61; A61F; A61F9/00; A61F9/0008; A61F9/0017
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
71 words
An oxygen and hydrogen generator comprising a water containing polymer having a plurality of photosensitive particles imbedded within the polymer which produce both hydrogen and oxygen by the photoelectrolysis of water when the photosensitive particles are excited by being exposed to light, said polymer having a plurality of open ended tubes extending into the polymer structure whereby the generated oxygen and hydrogen may pass within the tubes to the polymer surface.
Claim 2
Dependent Claim
71 words
An oxygen and hydrogen generator comprising a water containing polymer having a plurality of photosensitive particles imbedded within the polymer which produce both hydrogen and oxygen by the photoelectrolysis of water when the photosensitive particles are excited by being exposed to light, said polymer having a plurality of open ended tubes extending into the polymer structure whereby the generated oxygen and hydrogen may pass within the tubes to the polymer surface.
Claim 3
Dependent Claim
14 words
A generator as in claim 1 wherein the polymer surface has a negative charge.
Claim 4
Dependent Claim
12 words
A generator as in claim 1 wherein the polymer surface is hydrophilic.
Claim 5
Dependent Claim
12 words
A generator as in claim 1 wherein the polymer surface is hydrophobic.
Claim 6
Dependent Claim
22 words
A generator as in claim 1 which is shaped into a contact lens and provides oxygen to the cornea of the eye.
Claim 7
Dependent Claim
12 words
A generator as in claim 1 wherein the generated oxygen is collected.
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) | 1986-08-29 | 1987-02-28 | 1987-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-29 | 1991-02-28 | 1991-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-29 | 1995-02-28 | 1995-08-30 | $7700.00 | Window Closed / Lapsed |