Patent US3235635A successfully refreshed from Google Patents.
US3235635A
Expired / Lapsed
US
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Method of preparing perlite products
Assignee: Johns Manville Corp
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Filing: 1961-06-02
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Granted: 1966-02-15
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Expires: 1981-06-02
Abstract
No abstract record available.
Inventors
- 👤 Raymond G Riede
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:13
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/02; B01J20/10; B01J20/103; B01J20/106; B01D; B01D39/00; B01D39/02; B01D39/06; C; C04; C04B; C04B18/00; C04B18/02; C04B18/027
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
63 words
THE METHOD OF MANUFACTURING AN IMPROVED PERLITE PRODUCT WHICH COMPRISES AGGLOMERATING EXPANDED PERLITE PARTICLES BY MIXING SAID PARTICLES AND ADDING TO THE MOVING MASS OF PARTICLES ATOMIZED DROPLETS OF LIQUID IN AMOUNT SUFFICIENT TO COALEASE THE MIXUTRE WHEREBY THE LIQUID IS DISTRUBTED THROUGHOUT THE MASS OF PERLITE WITH THE RESULTING FORMATION IF DISCRETE AGGLOMERATES, THEN SUBJECTING THE THUS TREATED PERLITE PARTICLES TO CALCINATION.
Claim 2
Independent Claim
63 words
THE METHOD OF MANUFACTURING AN IMPROVED PERLITE PRODUCT WHICH COMPRISES AGGLOMERATING EXPANDED PERLITE PARTICLES BY MIXING SAID PARTICLES AND ADDING TO THE MOVING MASS OF PARTICLES ATOMIZED DROPLETS OF LIQUID IN AMOUNT SUFFICIENT TO COALEASE THE MIXUTRE WHEREBY THE LIQUID IS DISTRUBTED THROUGHOUT THE MASS OF PERLITE WITH THE RESULTING FORMATION IF DISCRETE AGGLOMERATES, THEN SUBJECTING THE THUS TREATED PERLITE PARTICLES TO CALCINATION.
Claim 3
Independent Claim
84 words
THE METHOD OF MANUFACTURING AN IMPROVED PERLITE FILTER AID WHICH COMPRISES AGGLOMERATING EXPANDED PERLITE PARTICLS BY MIXING SAID PARTICLES WHICL SUBSTANTIALLY PRESERVING THE STRUCTURE THEREOF AND ADDING TO THE MOVING MASS OF PARTICLES ATOMIZED DROPLETS OF LIQUID IN AMOUNT SUFFICIENT TO COALESCE THE MIXTURE INTO DISCRETE AGGOLMERATES WHEREBY THE LIQUID IS DISTRUBTED THROUGHOUT THE MASS OF PERLITE, THEN SUBJECTING THE THUS TREATED PERLITE PARTICLES TO CALCINATION IN THE PRESENCE OF A FLUX IN AMOUNT SUFFICIENT TO EFFECT SINTERING OF THE PERLITE PARTICLES DURING CALCINATION.
Claim 4
Independent Claim
84 words
THE METHOD OF MANUFACTURING AN IMPROVED PERLITE FILTER AID WHICH COMPRISES AGGLOMERATING EXPANDED PERLITE PARTICLS BY MIXING SAID PARTICLES WHICL SUBSTANTIALLY PRESERVING THE STRUCTURE THEREOF AND ADDING TO THE MOVING MASS OF PARTICLES ATOMIZED DROPLETS OF LIQUID IN AMOUNT SUFFICIENT TO COALESCE THE MIXTURE INTO DISCRETE AGGOLMERATES WHEREBY THE LIQUID IS DISTRUBTED THROUGHOUT THE MASS OF PERLITE, THEN SUBJECTING THE THUS TREATED PERLITE PARTICLES TO CALCINATION IN THE PRESENCE OF A FLUX IN AMOUNT SUFFICIENT TO EFFECT SINTERING OF THE PERLITE PARTICLES DURING CALCINATION.
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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) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |