US2912759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of dentures having materially reduced tendency to adhere to chewing gum
Assignee: WM Wrigley Jr Co
•
Filing: 1955-03-11
•
Granted: 1959-11-17
•
Expires: 1975-03-11
Abstract
No abstract record available.
Inventors
- 👤 Schlesinger Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:28
CPC Classifications
A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
IN A METHOD OF MAKING DENTURES OF A CHARACTER SUCH AS TO BE SUBSTANTIALLY FREE OF THE TENDENCY OF CHEWING GUM TO ADHERE THERETO WHEN MASTICATED IN CONTACT WITH SUCH DENTURES, THE STEPS WHICH COMPRISES COATING A DENTURE WITH A FILM OF A STRONGLY ADHERENT ACRYLIC POLYMER, AND THEN CONTACTING SAID COATED DENTURE WITH A SOLUTION OF A STRONGLY ALKALINE MATERIAL FOR A PERIOD OF TIME SUFFICIENT TO BRING ABOUT A SURFACE MODIFICATION OF SAID COATING WHEREBY TO RENDER THE SAME SUBSTANTIALLY FREE OF ADHERENCE TO CHEWING GUM.
Claim 2
Dependent Claim
88 words
IN A METHOD OF MAKING DENTURES OF A CHARACTER SUCH AS TO BE SUBSTANTIALLY FREE OF THE TENDENCY OF CHEWING GUM TO ADHERE THERETO WHEN MASTICATED IN CONTACT WITH SUCH DENTURES, THE STEPS WHICH COMPRISES COATING A DENTURE WITH A FILM OF A STRONGLY ADHERENT ACRYLIC POLYMER, AND THEN CONTACTING SAID COATED DENTURE WITH A SOLUTION OF A STRONGLY ALKALINE MATERIAL FOR A PERIOD OF TIME SUFFICIENT TO BRING ABOUT A SURFACE MODIFICATION OF SAID COATING WHEREBY TO RENDER THE SAME SUBSTANTIALLY FREE OF ADHERENCE TO CHEWING GUM.
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) | 1962-11-16 | 1963-05-18 | 1963-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-16 | 1967-05-18 | 1967-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-16 | 1971-05-18 | 1971-11-17 | $7700.00 | Window Closed / Lapsed |