| Schedule of segment operating loss to net loss |
| Schedule of segment operating loss to net loss | |
| |
| | |
Three Months ended March 31 | |
| | |
2026 | | |
2025 | |
| Revenues | |
| | |
| |
| Licenses, royalties and fees | |
$ | 100,700 | | |
$ | 190,300 | |
| Product and other sales | |
| 289,000 | | |
| 288,700 | |
| Total revenues | |
| 389,700 | | |
| 479,000 | |
| Cost of revenues | |
| | | |
| | |
| Licenses, royalties and fees | |
| 46,400 | | |
| 43,500 | |
| Product and other sales | |
| 152,700 | | |
| 161,800 | |
| Total cost of revenues | |
| 199,100 | | |
| 205,300 | |
| Gross profit | |
| 190,600 | | |
| 273,700 | |
| Operating expenses | |
| | | |
| | |
| Research and development | |
| 55,800 | | |
| 45,000 | |
| Sales and marketing | |
| 74,500 | | |
| 91,000 | |
| General and administrative | |
| 221,800 | | |
| 223,500 | |
| Total operating expenses | |
| 352,100 | | |
| 359,500 | |
| Net loss from operations | |
| (161,500 | ) | |
| (85,800 | ) |
| | |
| | | |
| | |
| Other income (expenses) | |
| | | |
| | |
| Interest income | |
| 105,200 | | |
| 117,200 | |
| Interest expense and bank charges | |
| (6,000 | ) | |
| (5,900 | ) |
| Total other income | |
| 99,200 | | |
| 111,300 | |
| Net (loss) income before income taxes | |
| ) | |
| |
| Income taxes | |
| — | | |
| — | |
| Net (loss) income | |
$ | (62,300 | ) | |
$ | 25,500 | ) |
|