US2701220A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of cleaning glassworking tools
Assignee: Corning Glass Works
•
Filing: 1953-12-22
•
Granted: 1955-02-01
•
Expires: 1973-12-22
Abstract
No abstract record available.
Inventors
- 👤 Rowland D Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:09
CPC Classifications
C; C03; C03B; C03B9/00; C03B9/30; C03B9/48
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
THE METHOD OF REMOVING FROM THE SURFACE OF A GLASS-WORKING TOOL WHILE AT WORKING TEMPERATURE THE CONDENSATION PRODUCTS AND RESIDUE RESULTING FROM WORKING CONTACT WITH HOT PLASTIC GLASS, WHICH COMPRISES DIRECTING AGAINST SUCH RESIDUE A BLAST OF DRY PARTICLES OF A SOLID AMMONIA DERIVATIVE WHICH WILL COMPLETELY DISSOCIATE INTOO GASEOUS PRODUCTS ON CONTACT WITH THE HOT SURFACES.
Claim 2
Independent Claim
57 words
THE METHOD OF REMOVING FROM THE SURFACE OF A GLASS-WORKING TOOL WHILE AT WORKING TEMPERATURE THE CONDENSATION PRODUCTS AND RESIDUE RESULTING FROM WORKING CONTACT WITH HOT PLASTIC GLASS, WHICH COMPRISES DIRECTING AGAINST SUCH RESIDUE A BLAST OF DRY PARTICLES OF A SOLID AMMONIA DERIVATIVE WHICH WILL COMPLETELY DISSOCIATE INTOO GASEOUS PRODUCTS ON CONTACT WITH THE HOT SURFACES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-01-31 | 1958-08-02 | 1959-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-01-31 | 1962-08-02 | 1963-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-01-31 | 1966-08-02 | 1967-02-01 | $7700.00 | Window Closed / Lapsed |