G09B 3/02
Manually or mechanically operated teaching appliances working with questions and answers: of
Official title: of the type wherein the student is expected to construct an answer to the question which is presented or wherein the machine gives an answer to the question presented by a student
G09B3/02 (Manually or mechanically operated teaching appliances working with questions and answers: of) appears on 137 US grants and 95 published applications in this corpus.
Search patents in G09B- Granted patents
- 137
- Published applications
- 95
- Assignees
- 47
- Inventors
- 225
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 11 | 0 |
| 1999 | 3 | 0 |
| 2000 | 11 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 1 | 9 |
| 2004 | 5 | 19 |
| 2005 | 3 | 2 |
| 2006 | 7 | 2 |
| 2007 | 3 | 4 |
| 2008 | 0 | 3 |
| 2009 | 2 | 3 |
| 2010 | 2 | 3 |
| 2011 | 0 | 1 |
| 2012 | 1 | 3 |
| 2013 | 0 | 0 |
| 2014 | 3 | 5 |
| 2015 | 2 | 2 |
| 2016 | 0 | 1 |
| 2017 | 1 | 4 |
| 2018 | 0 | 7 |
| 2019 | 1 | 2 |
| 2020 | 5 | 4 |
| 2021 | 3 | 2 |
| 2022 | 1 | 2 |
| 2023 | 3 | 4 |
| 2024 | 1 | 7 |
| 2025 | 4 | 4 |
| 2026 | 5 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Image processing apparatus, method of controlling the same, and storage medium6 Oct 2026US 12,755,642 B2Canon Kabushiki Kaisha
- Chat card engine(s) for conversational chat cards14 Jul 2026US 12,682,775 B2Microsoft Technology Licensing, LLC
- Apparatus and method for recursive use of articles in performance of activities21 Apr 2026US 12,609,041 B2
- Educational aid for teaching mathematics10 Mar 2026US 12,573,316 B2Equate-Ing IP Holdco, LLC
- Musical note value pie27 Jan 2026US 12,536,919 B1
- Chat card engine(s) for conversational chat cards21 Aug 2025US 2025/0265939 A1Microsoft Technology Licensing, LLC
- Dynamically Adjusting Augmented-Reality Experience for Multi-Part Image Augmentation5 Jun 2025US 2025/0182643 A1Google Inc.
- Using domain expertise scores for selection of artificial intelligence (ai) chatbots and a relatively best answer15 May 2025US 2025/0157351 A1International Business Machines Corporation
- Method for supporting self-directed learning by student6 Feb 2025US 2025/0046204 A1
- Image processing apparatus, method of controlling the same, and storage medium5 Dec 2024US 2024/0404417 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Character recognition educational system223US 5,823,782 ATinkers & Chance · 1998
- Method for evaluating standardized test results116US 6,960,088 B12005
- Computerized systems for optically scanning and electronically scoring and reporting test results80US 6,042,384 ABookette Software Company · 2000
- Reusable hidden indicia printed sheet78US 5,139,572 A1992
- Teaching or amusement apparatus71US 4,627,819 APrice/Stern/Sloan Publishers, Inc. · 1986