US3278328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating substrates with inorganic polyphosphates
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1963-09-16
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Granted: 1966-10-11
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Expires: 1983-09-16
Abstract
No abstract record available.
Inventors
- 👤 Eugene H Okrent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:01
CPC Classifications
C; C01; C01B; C01B25/00; C01B25/16; C01B25/26; C01B25/38; C01B25/40; C01B25/41; C01B25/412; C23; C23C; C23C22/00; C23C22/73; C23C22/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A METHOD FOR COATING SUBSTRATES WITH A HARD FILM WHICH COMPRISES: (A) FORMING A HYDROUS MIXTURE OF MH2PO4 AND M2HPO4, WHEREIN M IS A METAL, (B) APPLYING SAID MISTURE TO A SURFACE OF SAID SUBSTRATE, (C) HEATING SAID SUBSTRATE AND SAID MIXTURE TO POLYMERIZE SAID MH2PO4 AND SAID M2HPO4, AND (D) RECOVERING SAID COATED SUBSTRATE.
Claim 2
Independent Claim
55 words
A METHOD FOR COATING SUBSTRATES WITH A HARD FILM WHICH COMPRISES: (A) FORMING A HYDROUS MIXTURE OF MH2PO4 AND M2HPO4, WHEREIN M IS A METAL, (B) APPLYING SAID MISTURE TO A SURFACE OF SAID SUBSTRATE, (C) HEATING SAID SUBSTRATE AND SAID MIXTURE TO POLYMERIZE SAID MH2PO4 AND SAID M2HPO4, AND (D) RECOVERING SAID COATED SUBSTRATE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |