Patent US4044762A successfully refreshed from Google Patents.
US4044762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Athletic mouthguard
Assignee: Individual
•
Filing: 1976-08-23
•
Granted: 1977-08-30
•
Expires: 1996-08-23
Abstract
Abstract An athletic mouthguard for use by participants in contact sports to simultaneously protect and topically treat the teeth. The mouthguard is a generally U-shaped channel molded preferably from a composition of thermoplastic resin and a fluoride compound such as sodium fluoride, stannous fluoride, or sodium fluorosilicate. The fluoride compound is released from the molded resin mouthguard to the wearer's teeth over extended periods of use.
Inventors
- 👤 Alfred G. Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:11
CPC Classifications
A; A63; A63B; A63B71/00; A63B71/08; A63B71/085; A61; A61C; A61C5/00; A61C5/90; A63B2071/088; Y; Y10; Y10S; Y10S264/00; Y10S264/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A generally U-shaped athletic mouthguard molded from a composition of liquid impermeable ethylene vinyl acetate copolymer and not more than 5% by weight fluoride compound selected from the group consisting essentially of sodium fluoride, stannous fluoride, and sodium fluorosilicate; said liquid impermeable ethylene vinyl acetate copolymer having a melting point below the fluoride compound whereby when heated to a temperature in excess of normal human body temperature can be molded to receive an impression of the wearer's teeth and when cooled to the normal human body temperature is resilient and shape retaining.
Claim 2
Dependent Claim
92 words
A generally U-shaped athletic mouthguard molded from a composition of liquid impermeable ethylene vinyl acetate copolymer and not more than 5% by weight fluoride compound selected from the group consisting essentially of sodium fluoride, stannous fluoride, and sodium fluorosilicate; said liquid impermeable ethylene vinyl acetate copolymer having a melting point below the fluoride compound whereby when heated to a temperature in excess of normal human body temperature can be molded to receive an impression of the wearer's teeth and when cooled to the normal human body temperature is resilient and shape retaining.
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) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |