Patent US2807602A successfully refreshed from Google Patents.
US2807602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental materials containing butadiene copolymers
Assignee: Bayer AG
•
Filing: 1952-08-12
•
Granted: 1957-09-24
•
Expires: 1972-08-12
Abstract
No abstract record available.
Inventors
- 👤 Schnell Hermann
- 👤 Becker Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:11
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; A; A61; A61K; A61K6/00; A61K6/80; A61K6/884; A61K6/887
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
DENTAL MATERIALS FOR MAKING DENTAL RESTORATIONS COMPRISING A POLYMERIZABLE LIQUID ORGANIC COMPOUND (1) HAVING AN OLEFINIC BOND AND A FINELY PULVERIZED SOLID COPOLYMER (II) OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID ALKYL ESTERS AND METHACRYLIC ACID ALKYL ESTERS AND 5-40% BY WEIGHT OF A POLYMERIZABLE BUTADIENE, SAID COPOLYMER II BEING PRESENT IN AN AMOUNT SURPASSING THAT OF SAID LIQUID POLYMERIZABLE COMPOUND (I).
Claim 2
Dependent Claim
66 words
DENTAL MATERIALS FOR MAKING DENTAL RESTORATIONS COMPRISING A POLYMERIZABLE LIQUID ORGANIC COMPOUND (1) HAVING AN OLEFINIC BOND AND A FINELY PULVERIZED SOLID COPOLYMER (II) OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID ALKYL ESTERS AND METHACRYLIC ACID ALKYL ESTERS AND 5-40% BY WEIGHT OF A POLYMERIZABLE BUTADIENE, SAID COPOLYMER II BEING PRESENT IN AN AMOUNT SURPASSING THAT OF SAID LIQUID POLYMERIZABLE COMPOUND (I).
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) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |