Patent US4691340A successfully refreshed from Google Patents.
US2861897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of applying an organic film coating by spraying
Assignee: EIDP Inc
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Filing: 1955-01-13
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Granted: 1958-11-25
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Expires: 1975-01-13
Abstract
No abstract record available.
Inventors
- 👤 Philip R Hendrixson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:06
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
THE METHOD OF APPLYING A FILM-LIKE ORGANIC COATING TO THE SURFACE OF AN ARTICLE WHICH COMPRISES PROVIDING (1) A BODY OF A LIQUID COMPOSITION INCLUDING A VOLATILE SOLVENT AND A FILM-FORMING ORGANIC MATERIAL DISPERSED THEREIN, SAID SOLVENT BEING SUBSTANTIALLY INERT TO THE FILMFORMING ORGANIC MATERIAL, AND (2) A SPRAY ZONE IN FLUID COMMUNICATION WITH SAID BODY FOR RETAINING THE VAPORS OF THE SOLVENT; MAINTAINING SAID LIQUID COMPOSITION AT ITS BOILING TEMPERATURE; CONDENSING SOLVENT VAPORS IN THE SPRAY ZONE AND RETURNING THE CONDENSED SOLVENT TO THE BODY OF LIQUID; PREHEATING THE ARTICLE TO BE COATED TO A TEMPERATURE AT LEAST EQUAL TO THE BOILING POINT OF THE SOLVENT; SPRAYING SAID ARTICLE IN THE SPRAY ZONE WITH SAID LIQUID COMPOSITION, THE HEAT WITHIN THE ARTICLE EVAPORATING THE SOLVENT AS THE COMPOSITION IS APPLIED; AND WITHDRAWING THE ARTICLE FROM THE SPRAY ZONE SUBSTANTIALLY SOLVENTFREE BUT COATED WITH SAID FILM-FORMING ORGANIC MATERIAL.
Claim 2
Independent Claim
148 words
THE METHOD OF APPLYING A FILM-LIKE ORGANIC COATING TO THE SURFACE OF AN ARTICLE WHICH COMPRISES PROVIDING (1) A BODY OF A LIQUID COMPOSITION INCLUDING A VOLATILE SOLVENT AND A FILM-FORMING ORGANIC MATERIAL DISPERSED THEREIN, SAID SOLVENT BEING SUBSTANTIALLY INERT TO THE FILMFORMING ORGANIC MATERIAL, AND (2) A SPRAY ZONE IN FLUID COMMUNICATION WITH SAID BODY FOR RETAINING THE VAPORS OF THE SOLVENT; MAINTAINING SAID LIQUID COMPOSITION AT ITS BOILING TEMPERATURE; CONDENSING SOLVENT VAPORS IN THE SPRAY ZONE AND RETURNING THE CONDENSED SOLVENT TO THE BODY OF LIQUID; PREHEATING THE ARTICLE TO BE COATED TO A TEMPERATURE AT LEAST EQUAL TO THE BOILING POINT OF THE SOLVENT; SPRAYING SAID ARTICLE IN THE SPRAY ZONE WITH SAID LIQUID COMPOSITION, THE HEAT WITHIN THE ARTICLE EVAPORATING THE SOLVENT AS THE COMPOSITION IS APPLIED; AND WITHDRAWING THE ARTICLE FROM THE SPRAY ZONE SUBSTANTIALLY SOLVENTFREE BUT COATED WITH SAID FILM-FORMING ORGANIC MATERIAL.
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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) | 1961-11-24 | 1962-05-26 | 1962-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-24 | 1966-05-26 | 1966-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-24 | 1970-05-26 | 1970-11-25 | $7700.00 | Window Closed / Lapsed |