Patent US4351080A successfully refreshed from Google Patents.
US4351080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toothbrush with curved bristles and handle
Assignee: Individual
•
Filing: 1980-06-30
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Granted: 1982-09-28
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Expires: 2000-06-30
Abstract
Abstract A toothbrush having a bristle head and handle wherein the bristle rows are curved from front to back and wherein the handle is both bowed and also curved in a direction opposite to the curve of the bristles enabling the brush head bristles to make direct contact with the teeth and gum lines simultaneously.
Inventors
- 👤 Milton Grossman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:02
CPC Classifications
A; A46; A46B; A46B5/00; A46B5/02; A46B9/00; A46B9/02; A46B9/04; A46B2200/00; A46B2200/10; A46B2200/1066
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
64 words
A toothbrush comprising a handle and brush head having bristles extending therefrom wherein said bristles are curved away from a longitudinal axis through said handle and said brush head, with the bristles near the front of the toothbrush distant from the handle end displaced a greater distance from the longitudinal axis then the bristles near the back end of the toothbrush near the handle.
Claim 2
Dependent Claim
64 words
A toothbrush comprising a handle and brush head having bristles extending therefrom wherein said bristles are curved away from a longitudinal axis through said handle and said brush head, with the bristles near the front of the toothbrush distant from the handle end displaced a greater distance from the longitudinal axis then the bristles near the back end of the toothbrush near the handle.
Claim 3
Dependent Claim
32 words
The toothbrush of claim 1 wherein said handle is twisted about said longitudinal axis through said handle and said brush head and in a direction opposite of the curve of said bristles.
Claim 4
Dependent Claim
10 words
The toothbrush of claim 1 wherein said handle is bowed.
Claim 5
Dependent Claim
10 words
The toothbrush of claim 2 wherein said handle is bowed.
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) | 1985-09-27 | 1986-03-29 | 1986-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-27 | 1990-03-29 | 1990-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-27 | 1994-03-29 | 1994-09-28 | $7700.00 | Window Closed / Lapsed |