Patent US5462555A successfully refreshed from Google Patents.
USRE28361E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymer pigmentation
Assignee: —
•
Filing: 1973-06-20
•
Granted: 1975-03-11
•
Expires: 1993-06-20
Abstract
Abstract 1. PIGMENTED POLYMER PARTICLES, SAID POLYMER PARTICLES HAVING A PIGMENT ABRASIVELY ADHERED TO THE SURFACES THEREOF BY MIXING THE POLYMER PARTICLES AND DRY POWDERED PIGMENT IN A ROTARY BLADE MIXER HAVING A TIP SPEED EXCEEDING ABOUT 200 INCHES PER SECOND, SAID POLYMER PARTICLES HAVING A SCREEN MESH SIZE OF ABOUT 20 TO 200 U.S. STANDARD SIEVE AND BEING SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE, POLYMERIZED LOWER ALKYL ESTER OF ACRYLIC ACID IN WHICH THE LOWER ALKYL ESTER GROUP HAS ONE TO FOUR CARBON ATOMS, AND POLYMERIZED LOWER ALKYL ESTER OF METHACRYLIC ACID IN WHICH THE LOWER ALKYL ESTER GROUP HAS ONE TO FOUR CARBON ATOMS.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:49
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/22; C08J9/224; B; B01; B01F; B01F35/00; B01F35/20; B01F35/22; B01F35/221; B01F35/2214; B01F35/22142; B01F35/221421; B29; B29B; B29B7/00; B29B7/002; B29B7/005; B29B7/80; B29B7/88; B29B9/00; B29B9/16; C08J3/00; C08J3/20; C08J3/203; C08L; C08L51/00; C08L51/04; C08L55/00; C08L55/02; B29K; B29K2023/00; B29K2023/04; B29K2023/06; B29K2023/10; B29K2023/12; B29K2033/00; B29K2033/04; B29K2033/08; B29K2033/12; B29K2105/00; B29K2105/0005; B29K2105/0032; B29K2105/25; B29K2105/251; C08J2323/00; C08J2323/02; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2991; Y10T428/2998
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
PIGMENTED POLYMER PARTICLES, SAID POLYMER PARTICLES HAVING A PIGMENT ABRASIVELY ADHERED TO THE SURFACES THEREOF BY MIXING THE POLYMER PARTICLES AND DRY POWDERED PIGMENT IN A ROTARY BLADE MIXER HAVING A TIP SPEED EXCEEDING ABOUT 200 INCHES PER SECOND, SAID POLYMER PARTICLES HAVING A SCREEN MESH SIZE OF ABOUT 20 TO 200 U.S. STANDARD SIEVE AND BEING SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE, POLYMERIZED LOWER ALKYL ESTER OF ACRYLIC ACID IN WHICH THE LOWER ALKYL ESTER GROUP HAS ONE TO FOUR CARBON ATOMS, AND POLYMERIZED LOWER ALKYL ESTER OF METHACRYLIC ACID IN WHICH THE LOWER ALKYL ESTER GROUP HAS ONE TO FOUR CARBON ATOMS.
Claim 2
Dependent Claim
106 words
PIGMENTED POLYMER PARTICLES, SAID POLYMER PARTICLES HAVING A PIGMENT ABRASIVELY ADHERED TO THE SURFACES THEREOF BY MIXING THE POLYMER PARTICLES AND DRY POWDERED PIGMENT IN A ROTARY BLADE MIXER HAVING A TIP SPEED EXCEEDING ABOUT 200 INCHES PER SECOND, SAID POLYMER PARTICLES HAVING A SCREEN MESH SIZE OF ABOUT 20 TO 200 U.S. STANDARD SIEVE AND BEING SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE, POLYMERIZED LOWER ALKYL ESTER OF ACRYLIC ACID IN WHICH THE LOWER ALKYL ESTER GROUP HAS ONE TO FOUR CARBON ATOMS, AND POLYMERIZED LOWER ALKYL ESTER OF METHACRYLIC ACID IN WHICH THE LOWER ALKYL ESTER GROUP HAS ONE TO FOUR CARBON ATOMS.
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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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |