Patent US2640771A successfully refreshed from Google Patents.
US2640771A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of producing fusee compositions
Assignee: Kilgore Inc
•
Filing: 1949-10-12
•
Granted: 1953-06-02
•
Expires: 1969-10-12
Abstract
No abstract record available.
Inventors
- 👤 Herbert C Clauser
- 👤 Robert S Long
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:26
CPC Classifications
F; F21; F21K; F21K5/00; F21K5/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A PROCESS FOR CONVERTING FUSEE COMPOSITION TO A PLASTIC STATE FOR EXTRUSION PURPOSES WHICH COMPRISES THE STEPS OF REDUCING A METALLIC NITRATE TO A PULVERANT FORM; HEATING SAID METALLIC NITRATE IN PULVERANT FORM TO A TEMPERATURE MAINTAINED IN THE RANGE OF ABOUT 180* F. TO 200* F., MIXING SAID METALLIC NITRATE WHILE HEATED WITH POTASSIUM PERCHLORATE, SAWDUST, SULPHUR, PARAFFING, CARNAUBA
Claim 2
Dependent Claim
60 words
A PROCESS FOR CONVERTING FUSEE COMPOSITION TO A PLASTIC STATE FOR EXTRUSION PURPOSES WHICH COMPRISES THE STEPS OF REDUCING A METALLIC NITRATE TO A PULVERANT FORM; HEATING SAID METALLIC NITRATE IN PULVERANT FORM TO A TEMPERATURE MAINTAINED IN THE RANGE OF ABOUT 180* F. TO 200* F., MIXING SAID METALLIC NITRATE WHILE HEATED WITH POTASSIUM PERCHLORATE, SAWDUST, SULPHUR, PARAFFING, CARNAUBA
References Cited (Backward Citations)
US399878A
Cited
US677528A
Cited
US1065987A
Cited
US1029884A
Cited
US1106087A
Cited
US1908979A
Cited
US2113004A
Cited
US2363569A
Cited
US2484355A
Cited
US2498050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-01 | 1956-12-01 | 1957-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-01 | 1960-12-01 | 1961-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-01 | 1964-12-01 | 1965-06-02 | $7700.00 | Window Closed / Lapsed |