US3380145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of fabricating multiple glazing unit
Assignee: PPG Industries Inc
•
Filing: 1965-08-02
•
Granted: 1968-04-30
•
Expires: 1985-08-02
Abstract
No abstract record available.
Inventors
- 👤 Charles E Stroud
- 👤 Herbert C Cerutti
- 👤 Thomas H Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:24
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/66; E06B3/663; E06B3/667; B; B21; B21D; B21D53/00; B21D53/74; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49787; Y10T29/49789; Y10T29/49798; Y10T29/49826; Y10T29/49828; Y10T29/49879; Y10T29/49885
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
IN A METHOD OF FORMING A RECTANGULAR SPACING ELEMENT HAVING MITERED CORNERS FOR A MULTIPLE GLAZING UNIT, THE STEPS COMPRISING FORMING A CHANNEL HAVING A BASE, TWO EXTENDING SIDES AND AN OPEN PORTION ORIENTED UPWARDLY; DEPOSITING DESICCANT INTO SAID CHANNEL THROUGH SAID OPEN PORTION; CLOSING SAID CHANNEL TO FORM A TUBE CONTAINING THE DESICCANT; CUTTING THREE 90 DEGREE NOTCHED AT SPACED LOCATIONS ALONG SAID TUBE; AND BENDING SAID TUBE AT RIGHT ANGLES AT THE THREE NOTCHES TO FORM A RECTANGULAR SPACING ELEMENT.
Claim 2
Dependent Claim
82 words
IN A METHOD OF FORMING A RECTANGULAR SPACING ELEMENT HAVING MITERED CORNERS FOR A MULTIPLE GLAZING UNIT, THE STEPS COMPRISING FORMING A CHANNEL HAVING A BASE, TWO EXTENDING SIDES AND AN OPEN PORTION ORIENTED UPWARDLY; DEPOSITING DESICCANT INTO SAID CHANNEL THROUGH SAID OPEN PORTION; CLOSING SAID CHANNEL TO FORM A TUBE CONTAINING THE DESICCANT; CUTTING THREE 90 DEGREE NOTCHED AT SPACED LOCATIONS ALONG SAID TUBE; AND BENDING SAID TUBE AT RIGHT ANGLES AT THE THREE NOTCHES TO FORM A RECTANGULAR SPACING ELEMENT.
References Cited (Backward Citations)
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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) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |