US3280230A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming lightweight material
Assignee: Individual
•
Filing: 1965-08-13
•
Granted: 1966-10-18
•
Expires: 1985-08-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Lawrence R Bradshaw
- 👤 Jr Jacob B Rivers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:16
CPC Classifications
B; B64; B64C; B64C3/00; B29; B29B; B29B11/00; B29B11/02; B29C; B29C65/00; B29C65/02; B29C65/14; B29C65/48; B29C65/4805; B29C65/483; B29C65/4835; B29C65/4845; B29C65/4865; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/114; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5346; C; C08; C08J; C08J9/00; C08J9/32; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1008; Y10T156/101; Y10T156/1016; Y10T156/1052; Y10T156/1062; Y10T156/1075; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24628; Y10T428/24669; Y10T428/24678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A METHOD OF FORMING A LIGHTWEIGHT MATERIAL, COMPRISING THE STEPS OF: PROVIDING A QUANTITY OF TETRAHEDRON SHAPED PARTICLES HAVING ROUNDED APEXES; MIXING THE PARTICLES WITH A MONOMER TO FORM A SLURRY; POURING THE SLURRY INTO A MOLD; VIBRATING THE MOLD TO ORIENT THE PARTICLES TO A MAXIMUM DENSITY; AND INITIATING POLYMERIZATION OF THE MONOMER BY IRRADIATION AT A DOSE RATE OF ABOUT 105 RADS/ HR.
Claim 2
Independent Claim
65 words
A METHOD OF FORMING A LIGHTWEIGHT MATERIAL, COMPRISING THE STEPS OF: PROVIDING A QUANTITY OF TETRAHEDRON SHAPED PARTICLES HAVING ROUNDED APEXES; MIXING THE PARTICLES WITH A MONOMER TO FORM A SLURRY; POURING THE SLURRY INTO A MOLD; VIBRATING THE MOLD TO ORIENT THE PARTICLES TO A MAXIMUM DENSITY; AND INITIATING POLYMERIZATION OF THE MONOMER BY IRRADIATION AT A DOSE RATE OF ABOUT 105 RADS/ HR.
References Cited (Backward Citations)
US2593714A
Cited
US2615271A
Cited
US3086899A
Cited
US2806509A
Cited
US3010158A
Cited
US3027694A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |