US3016598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making dense refractory objects
Assignee: Gladding Mcbean and Co
•
Filing: 1958-09-30
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Granted: 1962-01-16
•
Expires: 1978-09-30
Abstract
No abstract record available.
Inventors
- 👤 William D Anderson
- 👤 William O Brandt
- 👤 Clercq Leon J Le
- 👤 Jarvis J Fargo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:29
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/626; C04B35/63; C04B35/632; Y; Y10; Y10S; Y10S425/00; Y10S425/019; Y10S425/06; Y10S425/121
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A METHOD OF MAKING HARD, DENSE, UNIFORMLY COMPACTED AND STRONG HOLLOW OBJECTS FORMED ESSENTIALLY OF REFRACTORY OXIDES, COMPRISING: FORMING A SUSPENSION OF INORGANIC SOLIDS COMPRISING NOT LESS THAN 95% OF FINELY DIVIDED, SUBSTANTIALLY INERT REFRACTORY OXIDES IN AN ORGANIC SOLVENT HAVING A BOILING POINT OF NOT OVER 200*F., SAID SOLVENT CONTAINING AN ADHESIVE RESIN IN SOLUTION; PRESSURE SPRAYING SUCH SUSPENSION UPON A RIGID, SMOOTH-SURFACED AND NON-ABSORPTIVE MANDREL TO FORM A DEPOSIT OF DESIRED THICKNESS OF SAID INORGANIC SOLIDS ON THE SURFACE OF THE MANDREL; DRYING THE DEPOSIT MATERIAL ON THE MANDREL; ENCAPSULATING SAID DEPOSITED MATERIAL WITH A COMPLIANT IMPERVIOUS ENVELOPE; SUBJECTING THE DEPOSITED MATERIAL TO THE ACTION OF VACUUM TO REMOVE VIRTUALLY ALL VOLATILE MATERIAL; THEN HYDROPRESSING THE DRY DEPOSIT WHILE ON SAID MANDREL TO COMPACT AND ORIENT THE REFRACTORY OXIDES IN SUCH DEPOSITED MATERIAL; REMOVING THE ARTICLE COMPOSED OF SUCH HYDROPRESSED AND DEPOSITED MATERIAL FROM THE MANDREL AND SUBJECTING THE ARTICLE TO BRAKING AND FIRING STEPS.
Claim 2
Independent Claim
157 words
A METHOD OF MAKING HARD, DENSE, UNIFORMLY COMPACTED AND STRONG HOLLOW OBJECTS FORMED ESSENTIALLY OF REFRACTORY OXIDES, COMPRISING: FORMING A SUSPENSION OF INORGANIC SOLIDS COMPRISING NOT LESS THAN 95% OF FINELY DIVIDED, SUBSTANTIALLY INERT REFRACTORY OXIDES IN AN ORGANIC SOLVENT HAVING A BOILING POINT OF NOT OVER 200*F., SAID SOLVENT CONTAINING AN ADHESIVE RESIN IN SOLUTION; PRESSURE SPRAYING SUCH SUSPENSION UPON A RIGID, SMOOTH-SURFACED AND NON-ABSORPTIVE MANDREL TO FORM A DEPOSIT OF DESIRED THICKNESS OF SAID INORGANIC SOLIDS ON THE SURFACE OF THE MANDREL; DRYING THE DEPOSIT MATERIAL ON THE MANDREL; ENCAPSULATING SAID DEPOSITED MATERIAL WITH A COMPLIANT IMPERVIOUS ENVELOPE; SUBJECTING THE DEPOSITED MATERIAL TO THE ACTION OF VACUUM TO REMOVE VIRTUALLY ALL VOLATILE MATERIAL; THEN HYDROPRESSING THE DRY DEPOSIT WHILE ON SAID MANDREL TO COMPACT AND ORIENT THE REFRACTORY OXIDES IN SUCH DEPOSITED MATERIAL; REMOVING THE ARTICLE COMPOSED OF SUCH HYDROPRESSED AND DEPOSITED MATERIAL FROM THE MANDREL AND SUBJECTING THE ARTICLE TO BRAKING AND FIRING STEPS.
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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) | 1965-01-15 | 1965-07-17 | 1966-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-15 | 1969-07-17 | 1970-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-15 | 1973-07-17 | 1974-01-16 | $7700.00 | Window Closed / Lapsed |