Patent US5064868A successfully refreshed from Google Patents.
US5064868A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sprayable lightweight ablative coating
Assignee: National Aeronautics and Space Administration
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Filing: 1990-11-28
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Granted: 1991-11-12
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Expires: 2010-11-28
Abstract
Abstract An improved lightweight, ablative coating that may be spray applied and cured without the development of appreciable shrinkage cracks. The ablative mixture consists essentially of phenolic microballoons, hollow glass spheres, glass fibers, ground cork, a flexibilized resin binder, and an activated colloidal clay.
Inventors
- 👤 William G. Simpson
- 👤 Max H. Sharpe
- 👤 William E. Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:17
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/32; C08J2363/00; Y; Y10; Y10S; Y10S521/00; Y10S521/907
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
86 words
A composition, consisting essentially of: approximately one-hundred (100) parts by weight of twenty-five (25) to sixty-five (65) percent by weight of phenolic microspheres, zero (0) to twenty (20) percent by weight of hollow glass spheres, four (4) to ten (10) percent by weight of glass fibers, twenty-five (25) to fifty (50) percent by weight of a flexibilized epoxy resin binder, and two (2) to six (6) percent by weight of an activated colloidal clay; and two-hundred (200) to four-hundred (400) parts by weight of a solvent.
Claim 2
Dependent Claim
86 words
A composition, consisting essentially of: approximately one-hundred (100) parts by weight of twenty-five (25) to sixty-five (65) percent by weight of phenolic microspheres, zero (0) to twenty (20) percent by weight of hollow glass spheres, four (4) to ten (10) percent by weight of glass fibers, twenty-five (25) to fifty (50) percent by weight of a flexibilized epoxy resin binder, and two (2) to six (6) percent by weight of an activated colloidal clay; and two-hundred (200) to four-hundred (400) parts by weight of a solvent.
Claim 3
Dependent Claim
111 words
A composition, consisting essentially of: approximately one-hundred (100) parts by weight of twenty (20) to fifty-five (55) percent by weight of phenolic microspheres, zero (0) to twenty (20) percent by weight of hollow glass spheres, four (4) to ten (10) percent by weight of glass fibers, two (2) to four (4) percent by weight of ground cork, twenty-five (25) to forty-five (45) percent by weight of a epoxy-modified polyurethane resin binder, and two (2) to six (6) percent by weight of an activated colloidal clay; one (1) to ten (10) parts by weight of an aromatic amine curing agent; and two-hundred (200) to four-hundred (400) parts by weight of a solvent.
Claim 4
Dependent Claim
111 words
A composition, consisting essentially of: approximately one-hundred (100) parts by weight of twenty (20) to fifty-five (55) percent by weight of phenolic microspheres, zero (0) to twenty (20) percent by weight of hollow glass spheres, four (4) to ten (10) percent by weight of glass fibers, two (2) to four (4) percent by weight of ground cork, twenty-five (25) to forty-five (45) percent by weight of a epoxy-modified polyurethane resin binder, and two (2) to six (6) percent by weight of an activated colloidal clay; one (1) to ten (10) parts by weight of an aromatic amine curing agent; and two-hundred (200) to four-hundred (400) parts by weight of a solvent.
Claim 5
Dependent Claim
96 words
A composition, consisting essentially of: approximately one-hundred (100) parts by weight of twenty-nine (29) to thirty-seven (37) percent by weight of phenolic microspheres, eleven (11) to fifteen (15) percent by weight of hollow glass spheres, four (4) to six (6) percent by weight of glass fibers, two (2) to four (4) percent by weight of ground cork, thirty-eight (38) to forty-eight (48) percent by weight of a flexibilized epoxy resin binder, and two (2) to six (6) percent by weight of activated colloidal clay; and two-hundred (200) to four-hundred (400) parts by weight of a solvent.
Claim 6
Dependent Claim
96 words
A composition, consisting essentially of: approximately one-hundred (100) parts by weight of twenty-nine (29) to thirty-seven (37) percent by weight of phenolic microspheres, eleven (11) to fifteen (15) percent by weight of hollow glass spheres, four (4) to six (6) percent by weight of glass fibers, two (2) to four (4) percent by weight of ground cork, thirty-eight (38) to forty-eight (48) percent by weight of a flexibilized epoxy resin binder, and two (2) to six (6) percent by weight of activated colloidal clay; and two-hundred (200) to four-hundred (400) parts by weight of a solvent.
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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) | 1994-11-11 | 1995-05-13 | 1995-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-11 | 1999-05-13 | 1999-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-11 | 2003-05-13 | 2003-11-12 | $7700.00 | Window Closed / Lapsed |