Patent US3072944A successfully refreshed from Google Patents.
US3072944A
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US
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Toothbrushes
Assignee: Pro Phy Lac Tic Brush Co
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Filing: 1960-01-21
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Granted: 1963-01-15
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Expires: 1980-01-21
Abstract
No abstract record available.
Inventors
- 👤 Robert G Clayton
- 👤 Lewis J Halberstadt
- 👤 Tarin Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:52
CPC Classifications
A; A46; A46B; A46B9/00; A46B9/06; A46B2200/00; A46B2200/10; A46B2200/1066; Y; Y10; Y10S; Y10S15/00; Y10S15/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A TOOTHBRUSH COMPRISING A BRUSH BLOCK CONSISTING ENTIRELY OF A PLURALITY OF SPACED BRISTLE TUFTS, EACH TUFT CONSISTING OF A MULTIPLICITY OF CONTIGUOUS BRISTLE ELEMENTS, ONE PORTION OF THE TUFTS BEING MADE UP ENTIRELY OF BRISTLE HAVING NEGLIGIBLE MOISTURE ABSORPTIVE PROPERTIES AND CHARACTERIZED BY A CONSTANT FLEXIBILITY, A SECOND PORTION OF THE TUFTS BEING MADE UP ENTIRELY OF RELATIVELY STIFF BRISTLE ELEMENTS HAVING MOISTURE ABSORPTIVE PROPERTIES AND CHARACTERIZED BY AN INCREASE IN FLEXIBILITY UPON ABSORPTION OF MOISTURE DURING THE CLEANING PORTION OF A BRUSHING CYCLE TO APPROXIMATELY THE FLEXIBILITY OF THE BRISTLE ELEMENTS OF SAID ONE PORTION, WHEREBY THE OVERALL STIFFNESS OF THE BRISTLE ELEMENTS OF THE BRUSH BLOCK AT THE END OF THE CLEANING PORTION OF A BRUSHING CYCLE APPROXIMATES THAT OF THE ELEMENTS OF SAID ONE PORTION.
Claim 2
Dependent Claim
129 words
A TOOTHBRUSH COMPRISING A BRUSH BLOCK CONSISTING ENTIRELY OF A PLURALITY OF SPACED BRISTLE TUFTS, EACH TUFT CONSISTING OF A MULTIPLICITY OF CONTIGUOUS BRISTLE ELEMENTS, ONE PORTION OF THE TUFTS BEING MADE UP ENTIRELY OF BRISTLE HAVING NEGLIGIBLE MOISTURE ABSORPTIVE PROPERTIES AND CHARACTERIZED BY A CONSTANT FLEXIBILITY, A SECOND PORTION OF THE TUFTS BEING MADE UP ENTIRELY OF RELATIVELY STIFF BRISTLE ELEMENTS HAVING MOISTURE ABSORPTIVE PROPERTIES AND CHARACTERIZED BY AN INCREASE IN FLEXIBILITY UPON ABSORPTION OF MOISTURE DURING THE CLEANING PORTION OF A BRUSHING CYCLE TO APPROXIMATELY THE FLEXIBILITY OF THE BRISTLE ELEMENTS OF SAID ONE PORTION, WHEREBY THE OVERALL STIFFNESS OF THE BRISTLE ELEMENTS OF THE BRUSH BLOCK AT THE END OF THE CLEANING PORTION OF A BRUSHING CYCLE APPROXIMATES THAT OF THE ELEMENTS OF SAID ONE PORTION.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-14 | 1966-07-16 | 1967-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-14 | 1970-07-16 | 1971-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-14 | 1974-07-16 | 1975-01-15 | $7700.00 | Window Closed / Lapsed |