US3998945A
Expired / Lapsed
US
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Dental treatment
Assignee: National Patent Development Corp
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Filing: 1975-06-24
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Granted: 1976-12-21
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Expires: 1995-06-24
Abstract
Abstract N-haloamines also containing a hydroxy group, a sulfonic acid group, and N-acyl group or a carboxylic acid group are useful in treating teeth to remove caries, dissolve or remove plaque, to help in the prevention of calculus formation and in the brightening of teeth. The compounds can be used in solution or in carrier form as a paste.
Inventors
- 👤 Jeroslav Vit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:46
CPC Classifications
A; A61; A61Q; A61Q11/00; A61C; A61C17/00; A61C17/02; A61C17/028; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/44; A61K2800/00; A61K2800/20; A61K2800/22; A61K2800/222
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
46 words
An aqueous composition consisting essentially of water, an N-haloamino-alkanoic acid having 2 to 11 carbon atoms, said halogen having an atomic weight of 35 to 127 and a sufficient amount of an alkali metal phosphate or borate buffer to maintain the pH at 8 to 12.
Claim 2
Dependent Claim
46 words
An aqueous composition consisting essentially of water, an N-haloamino-alkanoic acid having 2 to 11 carbon atoms, said halogen having an atomic weight of 35 to 127 and a sufficient amount of an alkali metal phosphate or borate buffer to maintain the pH at 8 to 12.
Claim 3
Dependent Claim
14 words
A composition according to claim 1 wherein the N-halo compound is N-halo N-acetyl glycine.
Claim 4
Dependent Claim
15 words
A composition according to claim 1 wherein the N-halo compound is N-halo ethylenediamine tetraacetic acid.
Claim 5
Dependent Claim
13 words
A composition according to claim 1 wherein the buffer is disodium hydrogen phosphate.
Claim 6
Dependent Claim
17 words
A composition according to claim 1 wherein the buffer is Na 2 B 4 O 7 .
Claim 7
Dependent Claim
13 words
A composition according to claim 1 wherein the pH is 10.5 to 11.5.
Claim 8
Dependent Claim
13 words
A composition according to claim 1 wherein the pH is 9.65 to 11.86.
Claim 9
Dependent Claim
20 words
A composition according to claim 1 wherein the buffer is a non-toxic phosphate or borate compatible with said N-haloaminoalkanoic acid.
Claim 10
Dependent Claim
12 words
A composition according to claim 1 wherein the N-halo compound is N-haloglycine.
Claim 11
Dependent Claim
11 words
A composition according to claim 9 wherein the N-haloglycine is N-chloroglycine.
Claim 12
Dependent Claim
13 words
A composition according to claim 9 wherein the N-haloglycine is N-bromoglycine or N-iodoglycine.
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) | 1979-12-21 | 1980-06-21 | 1980-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-21 | 1984-06-21 | 1984-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-21 | 1988-06-21 | 1988-12-21 | $7700.00 | Window Closed / Lapsed |