US2729328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Package of reversible hydrocolloid impression material and water-soluble inorganic salt
Assignee: Individual
•
Filing: 1953-02-10
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Granted: 1956-01-03
•
Expires: 1973-02-10
Abstract
No abstract record available.
Inventors
- 👤 Walter J Van Rossem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:18
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/70; B65D77/00; B65D77/04; B65D77/048; B65D2577/00; B65D2577/04; B65D2577/041; B65D2577/042; B65D2577/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PACKAGE OF MATERIAL FOR USE IN THE PREPARATION OF IMPRESSIONS, WHICH COMPRISES: A CONTAINER; A PLURALITY OF BODIES OF REVERSIBLE HYDROCOLLOID IMPRESSION MATERIAL WITHIN SAID CONTAINER; AND 2 QUANTITY OF WATER-SOLUBLE INORGANIC SALT WITHIN SAID CONTAINER; THE SPACE OCCUPIED BY SAID BODIES OF MATERIAL AND SAID SALT BEING LESS THAN THE INTERNAL CAPACITY OF SAID CONTAINER SO AS TO PROVIDE SPACE WITHIN THE CONTAINER FOR ADDITION OF WATER IN SUFFICIENT QUANTITY TO DISSOLVE SAID SALT.
Claim 2
Dependent Claim
76 words
A PACKAGE OF MATERIAL FOR USE IN THE PREPARATION OF IMPRESSIONS, WHICH COMPRISES: A CONTAINER; A PLURALITY OF BODIES OF REVERSIBLE HYDROCOLLOID IMPRESSION MATERIAL WITHIN SAID CONTAINER; AND 2 QUANTITY OF WATER-SOLUBLE INORGANIC SALT WITHIN SAID CONTAINER; THE SPACE OCCUPIED BY SAID BODIES OF MATERIAL AND SAID SALT BEING LESS THAN THE INTERNAL CAPACITY OF SAID CONTAINER SO AS TO PROVIDE SPACE WITHIN THE CONTAINER FOR ADDITION OF WATER IN SUFFICIENT QUANTITY TO DISSOLVE SAID SALT.
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) | 1959-01-02 | 1959-07-04 | 1960-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-02 | 1963-07-04 | 1964-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-02 | 1967-07-04 | 1968-01-03 | $7700.00 | Window Closed / Lapsed |