Patent US2861902A successfully refreshed from Google Patents.
US2861902A
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US
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Addition products of heterocyclic nitrogen polymers and heavy metal salts, method ofimpregnating with, and impregnated article
Assignee: Phillips Petroleum Co
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Filing: 1954-09-07
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Granted: 1958-11-25
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Expires: 1974-09-07
Abstract
No abstract record available.
Inventors
- 👤 James E Pritchard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:35
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; A; A01; A01N; A01N25/00; A01N25/08; A01N25/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
THE METHOD OF RENDERING ABSORBENT MATERIAL WATER REPELLENT AND RESISTANT TO ATTACK BY PARASITIC MICROORGANISMS COMPRISING IMPREGNATING SAID MATERIAL WITH THE REACTION PRODUCT OF A SOLUTION OF A HEAVY METAL SALT AND A SOLUTION OF A POLYMER OF A MONOMER SYSTEM COMPRISING A COMPOUND HAVING A STRUCTURE SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Independent Claim
53 words
THE METHOD OF RENDERING ABSORBENT MATERIAL WATER REPELLENT AND RESISTANT TO ATTACK BY PARASITIC MICROORGANISMS COMPRISING IMPREGNATING SAID MATERIAL WITH THE REACTION PRODUCT OF A SOLUTION OF A HEAVY METAL SALT AND A SOLUTION OF A POLYMER OF A MONOMER SYSTEM COMPRISING A COMPOUND HAVING A STRUCTURE SELECTED FROM THE GROUP CONSISTING OF
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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 |