Patent US5000941A successfully refreshed from Google Patents.
US5000941A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dentifrice containing microencapsulated oxygen
Assignee: Individual
•
Filing: 1989-05-16
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Granted: 1991-03-19
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Expires: 2009-05-16
Abstract
Abstract A stable oxygen containing dentifrice in powder form which contains a carrier and evenly dispersed therethrough a multiplicity of microencapsulated droplets of an oxygen releasing agent such as hydrogen peroxide. The walls of the microcapsules are rupturable upon mechanical manipulation of the dentifrice as it occurs during the toothbrushing action for releasing the oxygen-containing agent.
Inventors
- 👤 Milton P. Chernack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:33
CPC Classifications
A; A61; A61Q; A61Q11/00; A61K; A61K8/00; A61K8/02; A61K8/11; A61K8/18; A61K8/19; A61K8/22; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
113 words
A stable oxygen-containing dentifrice comprising: a carrier including a base in an effective amount to decompose a peroxy compound to release active oxygen; dispersed through said carrier a multiplicity of microencapsulated particles of a peroxy compound capable of releasing active oxygen, the walls of said microcapsules being rupturable upon mechanical manipulation for releasing said peroxy compound, said walls being formed from non-toxic material and being inert with respect to the action of both, the entrapped oxygen releasing agent as well as the carrier, said microcapsules having a diameter of from about 1 to about 1,000 microns and being sufficiently thin as to allow rupture by toothbrush action but sufficiently thick to withstand packing.
Claim 2
Dependent Claim
113 words
A stable oxygen-containing dentifrice comprising: a carrier including a base in an effective amount to decompose a peroxy compound to release active oxygen; dispersed through said carrier a multiplicity of microencapsulated particles of a peroxy compound capable of releasing active oxygen, the walls of said microcapsules being rupturable upon mechanical manipulation for releasing said peroxy compound, said walls being formed from non-toxic material and being inert with respect to the action of both, the entrapped oxygen releasing agent as well as the carrier, said microcapsules having a diameter of from about 1 to about 1,000 microns and being sufficiently thin as to allow rupture by toothbrush action but sufficiently thick to withstand packing.
Claim 3
Dependent Claim
15 words
The composition of claim 1, wherein the diameter of the microcapsules is below 200 microns.
Claim 4
Dependent Claim
19 words
The composition of claim 1, wherein the diameter of the microcapsules is between about 1 to about 100 microns.
Claim 5
Dependent Claim
19 words
The composition of claim 1, wherein the diameter of the microcapsules is from about 5 to about 50 microns.
Claim 6
Dependent Claim
18 words
The composition of claim 1, wherein the microcapsules additionally contain a stabilizer for stabilizing the oxygen releasing agent.
Claim 7
Dependent Claim
12 words
The composition of claim 1, wherein the carrier additionally comprises a antiseptic.
Claim 8
Dependent Claim
11 words
The composition of claim 1, wherein the base is sodium bicarbonate.
Claim 9
Dependent Claim
12 words
The composition of claim 1, wherein the carrier contains a coloring agent.
Claim 10
Dependent Claim
15 words
The composition of claim 1, wherein the microcapsules are substantially evenly dispersed throughout the carrier.
Claim 11
Dependent Claim
113 words
A stable oxygen-containing dentifrice comprising: as a carrier a finely divided, grain-free polishing agent; dispersed through said carrier a multiplicity of microencapsulated particles of a peroxy compound capable of releasing active oxygen, the walls of said microcapsules being rupturable upon mechanical manipulation for releasing said peroxy compound, said walls being formed from a non-toxic material which is inert with respect to the action of both, the entrapped peroxy compound as well as the carrier; the diameter of said microcapsules being in the range of from about 1 to about 1,000 microns, and said walls of said microcapsules being sufficiently thin as to allow rupture by toothbrush action, but sufficiently thick to withstand packing.
Claim 12
Dependent Claim
113 words
A stable oxygen-containing dentifrice comprising: as a carrier a finely divided, grain-free polishing agent; dispersed through said carrier a multiplicity of microencapsulated particles of a peroxy compound capable of releasing active oxygen, the walls of said microcapsules being rupturable upon mechanical manipulation for releasing said peroxy compound, said walls being formed from a non-toxic material which is inert with respect to the action of both, the entrapped peroxy compound as well as the carrier; the diameter of said microcapsules being in the range of from about 1 to about 1,000 microns, and said walls of said microcapsules being sufficiently thin as to allow rupture by toothbrush action, but sufficiently thick to withstand packing.
Claim 13
Dependent Claim
15 words
The composition of claim 13, wherein the diameter of the microcapsules is below 200 microns.
Claim 14
Dependent Claim
19 words
The composition of claim 13, wherein the diameter of the microcapsules is between about 1 to about 100 microns.
Claim 15
Dependent Claim
19 words
The composition of claim 13, wherein the diameter of the microcapsules is from about 5 to about 50 microns.
Claim 16
Dependent Claim
18 words
The composition of claim 13, wherein the microcapsules additionally contain a stabilizer for stabilizing the oxygen releasing agent.
Claim 17
Dependent Claim
13 words
The composition of claim 13, wherein the carrier additionally comprises a cleansing agent.
Claim 18
Dependent Claim
12 words
The composition of claim 13, wherein the carrier additionally comprises an antiseptic.
Claim 19
Dependent Claim
11 words
The composition of claim 13, wherein the base is sodium bicarbonate.
Claim 20
Dependent Claim
12 words
The composition of claim 13, wherein the carrier contains a coloring agent.
Claim 21
Dependent Claim
15 words
The composition of claim 13, wherein the microcapsules are substantially evenly dispersed throughout the carrier.
Claim 22
Dependent Claim
12 words
The composition of claim 13, wherein said polishing agent is sodium bicarbonate.
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) | 1994-03-18 | 1994-09-17 | 1995-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-18 | 1998-09-17 | 1999-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-18 | 2002-09-17 | 2003-03-19 | $7700.00 | Window Closed / Lapsed |