US4067578A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chess board and pieces
Assignee: PAUL JEOU-FUL CHANG
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Filing: 1976-08-26
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Granted: 1978-01-10
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Expires: 1996-08-26
Abstract
Abstract Chess board and pieces provided for playing by four persons, comprise a chess board having a "central field" of 8 × 8 squares. Sixteen diagonally disposed squares in the central field are called "combat bases," and extending from each side of the central field is an 8 × 4 squares "domain" for each player. Four sets of chess pieces each having 16 men are provided as in the conventional set and positioned respectively in two rows in the domain of each player just like those in the conventional set. Each chess piece is of a cube form having six faces, with four out of the six faces painted with different colors representing each player's "country" and marked with the symbol of a man. Each player positions his pieces and turns up the face having his own color.
Inventors
- 👤 Chiu-Hua Chang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:07
CPC Classifications
A; A63; A63F; A63F3/00; A63F3/00173; A63F3/00176; A63F3/00697; A63F2003/00747; A63F2003/00794; A63F2003/00813
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
153 words
Chess board and pieces provided for playing by four persons comprising and characterized by: a chess board having a "central field" of 8 × 8 squares, with 16 diagonally disposed squares in the central field designated as "combat bases," extending from each side of the central field an 8 × 4 square "domain" for each player, the squares being colored alternately light and dark, sixty-four chess pieces for the four players representing four countries, each having 16 pieces comprising a king (K), a queen (Q), two bishops (B), two knights (Kt), two rooks (R) and eight pawns (P) with their initial position in the domain as in the conventional chess game, each piece being of a cube shape having four out of its six faces painted with a different color for identification of each country, a symbol representing the said piece being marked on each of the color painted faces of the cube.
Claim 2
Dependent Claim
153 words
Chess board and pieces provided for playing by four persons comprising and characterized by: a chess board having a "central field" of 8 × 8 squares, with 16 diagonally disposed squares in the central field designated as "combat bases," extending from each side of the central field an 8 × 4 square "domain" for each player, the squares being colored alternately light and dark, sixty-four chess pieces for the four players representing four countries, each having 16 pieces comprising a king (K), a queen (Q), two bishops (B), two knights (Kt), two rooks (R) and eight pawns (P) with their initial position in the domain as in the conventional chess game, each piece being of a cube shape having four out of its six faces painted with a different color for identification of each country, a symbol representing the said piece being marked on each of the color painted faces of the cube.
Claim 3
Dependent Claim
153 words
Chess board and pieces provided for playing by four persons comprising and characterized by: a chess board having a "central field" of 10 × 10 squares, with 20 diagonally disposed squares in the central field designated as "combat bases," extending from each side of the central field a 10 × 4 square "domain" for each player, the squares being colored alternately light and dark, sixty-four chess pieces for the four players representing four countries, each having 16 pieces comprising a king (K), a queen (Q), two bishops (B), two knights (Kt), two rooks (R) and eight pawns (P) with their initial position in the domain as in the conventional chess game, each piece being of a cube shape having four out of its six faces painted with a different color for identification of each country, a symbol representing the said piece being marked on each of the color painted faces of the cube.
Claim 4
Dependent Claim
153 words
Chess board and pieces provided for playing by four persons comprising and characterized by: a chess board having a "central field" of 10 × 10 squares, with 20 diagonally disposed squares in the central field designated as "combat bases," extending from each side of the central field a 10 × 4 square "domain" for each player, the squares being colored alternately light and dark, sixty-four chess pieces for the four players representing four countries, each having 16 pieces comprising a king (K), a queen (Q), two bishops (B), two knights (Kt), two rooks (R) and eight pawns (P) with their initial position in the domain as in the conventional chess game, each piece being of a cube shape having four out of its six faces painted with a different color for identification of each country, a symbol representing the said piece being marked on each of the color painted faces of the cube.
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) | 1981-01-09 | 1981-07-11 | 1982-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-09 | 1985-07-11 | 1986-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-09 | 1989-07-11 | 1990-01-10 | $7700.00 | Window Closed / Lapsed |