US2864743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sterile, biologically absorbable powder adapted for dusting and spraying, and a process of making same
Assignee: Boehringer Ingelheim Pharma GmbH and Co KG
•
Filing: 1954-03-22
•
Granted: 1958-12-16
•
Expires: 1974-03-22
Abstract
No abstract record available.
Inventors
- 👤 Kottler August
- 👤 Scheffler Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:08
CPC Classifications
C; C08; C08B; C08B31/00; C08B31/003; C08B31/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
AS A NEW POWDER BASE MATERIAL ADAPTED FOR SPRAYING AND DUSTING, THE ADDITION PRODUCT FORMED BY A METAL SALT, SELECTED FROM THE GROUP CONSISTING OF INORGANIC MAGNESIUM SALTS AND ALUMINUM SALTS, UNDER ALKALINE CONDITIONS WITH THE ETHER OBTAINED BY REACTING A FORMALDEHYDESTARCH CONDENSATION PRODUCT CONTAINING FROM 30 TO 70 MOL PERCENT FORMALDEHYDE PER STARCH UNIT WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF EPICHLOROHYDRIN, MONOCHLOROHYDRIN AND B-CHLORO-ETHANOL.
Claim 2
Dependent Claim
68 words
AS A NEW POWDER BASE MATERIAL ADAPTED FOR SPRAYING AND DUSTING, THE ADDITION PRODUCT FORMED BY A METAL SALT, SELECTED FROM THE GROUP CONSISTING OF INORGANIC MAGNESIUM SALTS AND ALUMINUM SALTS, UNDER ALKALINE CONDITIONS WITH THE ETHER OBTAINED BY REACTING A FORMALDEHYDESTARCH CONDENSATION PRODUCT CONTAINING FROM 30 TO 70 MOL PERCENT FORMALDEHYDE PER STARCH UNIT WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF EPICHLOROHYDRIN, MONOCHLOROHYDRIN AND B-CHLORO-ETHANOL.
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) | 1961-12-15 | 1962-06-16 | 1962-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-15 | 1966-06-16 | 1966-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-15 | 1970-06-16 | 1970-12-16 | $7700.00 | Window Closed / Lapsed |