US3054353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Segment grain
Assignee: Individual
•
Filing: 1958-09-23
•
Granted: 1962-09-18
•
Expires: 1978-09-23
Abstract
No abstract record available.
Inventors
- 👤 Norman L Rumpp
- 👤 Cecil A Glass
- 👤 Paul K Chung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:13
CPC Classifications
F; F02; F02K; F02K9/00; F02K9/08; F02K9/10; F02K9/18; C; C06; C06B; C06B21/00; C06B45/00; C06B45/12; C08; C08L; C08L83/00; C09; C09J; C09J183/00; C09J183/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A RELATIVELY LONG, LARGE DIAMETER NITROCELLULOSE-NITROGLYCERINE PROPELLANT GRAIN COMPRISING A PLURALITY OF INDIVIDUAL LONGITUDINAL SEGMENTS, EACH SEGMENT HAVING TWO OPPOSITE LATERAL MATING SURFACES, SAID MATING SURFACES OF SAID SEGMENTS BEING SECURED TO EACH OTHER WITH AN ELASTIC ADHESIVE MATERIAL; SAID MATERIAL CONSISTING OF (1) AN ALIPHATIC HYDROCARBON SOLVENT FROM THE CLASS CONSISTING OF N-HEPTANE, BENZENE AND ETHYLENE DICHLORIDE, (2) A SILICONE RESIN COPOLYMER OF R3SIO1/2 AND SIO2 WHERE R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL RADICALS OF LESS THAN 4 CARBON ATOMS AND PHENYL, AND WHERE THE RATIO OF R3SIO1/2 UNITS TO SIO2 UNITS IS BETWEEN 0.6 TO 0.9, INCLUSIVE, AND (3) A DIORGANOSILOXANE HAVING THE GENERAL FORMUAL OF
Claim 2
Dependent Claim
111 words
A RELATIVELY LONG, LARGE DIAMETER NITROCELLULOSE-NITROGLYCERINE PROPELLANT GRAIN COMPRISING A PLURALITY OF INDIVIDUAL LONGITUDINAL SEGMENTS, EACH SEGMENT HAVING TWO OPPOSITE LATERAL MATING SURFACES, SAID MATING SURFACES OF SAID SEGMENTS BEING SECURED TO EACH OTHER WITH AN ELASTIC ADHESIVE MATERIAL; SAID MATERIAL CONSISTING OF (1) AN ALIPHATIC HYDROCARBON SOLVENT FROM THE CLASS CONSISTING OF N-HEPTANE, BENZENE AND ETHYLENE DICHLORIDE, (2) A SILICONE RESIN COPOLYMER OF R3SIO1/2 AND SIO2 WHERE R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL RADICALS OF LESS THAN 4 CARBON ATOMS AND PHENYL, AND WHERE THE RATIO OF R3SIO1/2 UNITS TO SIO2 UNITS IS BETWEEN 0.6 TO 0.9, INCLUSIVE, AND (3) A DIORGANOSILOXANE HAVING THE GENERAL FORMUAL OF
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-17 | 1966-03-19 | 1966-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-17 | 1970-03-19 | 1970-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-17 | 1974-03-19 | 1974-09-18 | $7700.00 | Window Closed / Lapsed |