Patent US3269820A successfully refreshed from Google Patents.
US3269820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method, system and apparatus for processing filament-forming mineral materials
Assignee: Owens Corning
•
Filing: 1965-06-14
•
Granted: 1966-08-30
•
Expires: 1985-06-14
Abstract
No abstract record available.
Inventors
- 👤 Day Frank
- 👤 Magnus L Froberg
- 👤 Jerry B Holschlag
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:46
CPC Classifications
C; C03; C03B; C03B37/00; C03B37/08; C03B5/00; C03B5/04; C03B5/16; C03B5/18; C03B5/183; C03B5/193; C03B5/235; C03B5/24; C03B7/00; C03B7/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
THE METHOD OF PROCESSING HEAT-SOFTENABLE MATERIAL INCLUDING FEEDING BATCH MATERIAL INTO AN ELONGATED CHAMBER ADJACENT ON END OF THE CHAMBER, APPLYING HEAT TO THE CHAMBER TO MELT THE BATCH MATERIAL IN THE CHAMBER, REGULATING THE HEAT TO ESTABLISH A ZONE OF HIGHEST TEMPERATURE IN THE CHAMBER INTERMEDIATE ITS ENDS, AGITATING THE MOLTEN MATERIAL AT A REGION SPACED FROM THE ZONE OF HIGHEST TEMPERATURE OF EFFECT FLOW OF THE MOLTEN MATERIAL IN OPPOSING DIRECTIONS SUBSTANTIALLY AT THE ZONE OF HIGHEST TEMPERATURE TO REFINE MOLTEN MATERIAL THROUGH A PASSAGE AT THE OTHER THE REFINED MOLTEN MATERIAL THROUGH A PASSAGE AT THE OTHER END OF THE CHAMBER.
Claim 2
Independent Claim
104 words
THE METHOD OF PROCESSING HEAT-SOFTENABLE MATERIAL INCLUDING FEEDING BATCH MATERIAL INTO AN ELONGATED CHAMBER ADJACENT ON END OF THE CHAMBER, APPLYING HEAT TO THE CHAMBER TO MELT THE BATCH MATERIAL IN THE CHAMBER, REGULATING THE HEAT TO ESTABLISH A ZONE OF HIGHEST TEMPERATURE IN THE CHAMBER INTERMEDIATE ITS ENDS, AGITATING THE MOLTEN MATERIAL AT A REGION SPACED FROM THE ZONE OF HIGHEST TEMPERATURE OF EFFECT FLOW OF THE MOLTEN MATERIAL IN OPPOSING DIRECTIONS SUBSTANTIALLY AT THE ZONE OF HIGHEST TEMPERATURE TO REFINE MOLTEN MATERIAL THROUGH A PASSAGE AT THE OTHER THE REFINED MOLTEN MATERIAL THROUGH A PASSAGE AT THE OTHER END OF THE CHAMBER.
References Cited (Backward Citations)
US2203269A
Cited
US2331052A
Cited
GB689297A
Cited
US3198618A
Cited
US3030736A
Cited
US2975224A
Cited
US3142551A
Cited
US3140334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |